LAUDA LRZ 921 Interface Module Ethernet USB Module Instruction Manual

June 13, 2024
LAUDA

LAUDA LRZ 921 Interface Module Ethernet USB Module

LAUDA-LRZ-921-Interface-Module-Ethernet-USB-Module-
PRODUCT

Product Information

The Interface module LRZ 921 V15 is an Ethernet USB module designed for use with a specific product. It is important to read and understand the operation manual before using the module.

Product Using Instructions

General

  1. Intended use: The interface module is intended to be used with a specific product.
  2. Compatibility: Ensure that the interface module is compatible with your specific product before use.
  3. Technical changes: Any technical changes to the interface module should be performed by qualified personnel.
  4. Copyright: Respect the copyright of the operation manual and any associated documents.
  5. Contact LAUDA: For any inquiries or assistance, contact LAUDA for support.

Safety

  1. General safety information and warnings: Follow all safety guidelines and warnings provided in the operation manual.
  2. Information about the interface module: Familiarize yourself with the specifications and features of the interface module.
  3. Personnel qualification: Only qualified personnel should handle the installation and operation of the interface module.

Unpacking

  • Follow the instructions provided in the operation manual for unpacking the interface module.

Device description

  • Purpose: Understand the purpose of the interface module and how it integrates with the specific product.
  • Structure: Learn about the physical structure and componentsof the interface module.

Before starting up

  • Installing the interface module: Follow the instructions provided in the operation manual for installing the interfacemodule.
  • Please refer to the complete operation manual for detailed instructions on using the interface module with your specific product.

General

Many types of LAUDA constant temperature equipment have vacant module slots for installing additional interfaces. The number, size and arrangement of the module slots vary depending on the device and are described in the operating manual accompanying the constant temperature equipment. Two additional module slots available as accessories can be fitted to a LiBus module box, which is then connected as an external casing to the LiBus interface on the constant temperature equipment.

This operating manual describes how to install and configure the EthernetUSB interface module (catalog no. LRZ 921). Constant temperature equipment can be connected to a PC or network via the Ethernet interface and controlled from there using the LAUDA command set. The interface functions provided for this purpose are described in chapters Ä Chapter 7.2.2 “Read commands” and Ä Chapter 7.2.3 “Write commands”. The two USB interfaces are intended for future expansion and do not currently have any function.

Intended use

The interface module can only be operated as intended and under the conditions specified in this operating manual. The interface module is an accessory that increases the connections options of LAUDA constant temperature equipment. It may only be installed in constant temperature equipment that supports the interface provided. Refer to the chapter “Compatibility” in this operating manual for a list of compatible product lines. Operation of the interface module is also permitted in combination with the LiBus module box (LAUDA catalog no. LCZ 9727). This operating manual also contains a description of how to install and connect up the module box.

Reasonably foreseeable improper use

  • Operation after incomplete assembly
  • Operation on incompatible constant temperature equipment
  • Operation using cables or connections that are defective or do not confirm to standards

Compatibility

The interface module is available as an accessory for the following LAUDA product lines:

  • ECO
  • Proline
  • Variocool, not compatible with Variocool NRTL
  • Integral XT, not compatible with Integral IN

Operating interfaces of the same type:

  • Only one Ethernet interface can be used for each item of constant temperature equipment.

Technical changes

  • All technical modifications are prohibited without the written consent of the manufacturer. Damage resulting from a failure to observe this condition will void all warranty claims.
  • However, LAUDA reserves the right to make general technical modifications.

Warranty conditions

  • LAUDA grants a standard warranty of one year.

Copyright

This operating manual was written in German, checked and approved. If the content of other language editions deviates from the German edition, the information in the German edition shall take precedence. If you notice any discrepancies in the content, please contact LAUDA Service. Company and product names mentioned in the operating manual are usually registered trademarks of the respective companies and are therefore subject to brand and patent protection. Some of the images used may also show accessories that are not included in the delivery.

All rights reserved, including those relating to technical modifications and translations. This operating manual or parts thereof may not be modified, translated or used in any other capacity without the written consent of LAUDA. Violation of this may obligate the violator to the payment of damages. Other claims reserved.

Contact LAUDA

Contact the LAUDA Service department in the following cases:

  • Troubleshooting
  • Technical questions
  • Ordering accessories and spare parts

Please contact our sales department for questions relating to your specific application.

Contact information

LAUDA Service

Safety

General safety information and warnings

  • Read this operating manual carefully before use.
  • Keep the operating manual in a place within easy reach of the interface module.
  • This operating manual is part of the interface module. If the interface module is passed on, the operating manual must be kept with it.
  • This operating manual is applicable in combination with the operating manual of the constant temperature equipment in which the interface module is installed.
  • Manuals for LAUDA products are available for download on the LAUDA website: https://www.lauda.de
  • The warnings and safety instructions in this operating manual must be observed without fail.
  • There are also certain requirements for personnel, see Ä Chapter 2.3 “Personnel qualification”.

Structure of warnings

Warning signs Type of danger
Warning – danger zone.
Signal word Meaning
DANGER! This combination of symbol and signal word indicates an imminently

dangerous situation that will result in death or serious injury if it is not avoided.
WARNING!| This combination of symbol and signal word indicates a potentially dangerous situation that can result in death or serious injury if it is not avoided.
NOTICE!| This combination of symbol and signal word indicates a potentially dangerous situation that can result in material and environmental damage if it is not avoided.

Information about the interface module

  • Always disconnect the constant temperature equipment from the power supply before installing the interface module or connecting interfaces.
  • Always take the recommended safety measures against electrostatic discharge before handling interface modules.
  • Avoid touching the circuit board with metallic tools.
  • Do not start up the constant temperature equipment before installation of the interface module is complete.
  • Store any unused interface modules in their packaging in accordance with the specified ambient conditions.
  • Use only suitable cables of sufficient length for cable connections.
  • Make sure that the protective screen on the cables and connectors complies with EMC regulations. LAUDA recommends using preassembled cables.
  • Always lay cables correctly so that they do not pose a tripping hazard. Secure the laid cables and make sure that they cannot be damaged during operation.
  • Check the condition of the cables and interfaces prior to each operation.
  • Immediately clean any soiled parts, in particular unused interfaces.
  • Make sure that the signals transmitted via the interface correspond to the permitted operating parameters of the interface module.

Personnel qualification

Specialized personnel: Only specialized personnel are permitted to install interfaces modules. Specialized personnel are personnel whose education, knowledge, and experience qualify them to assess the function and risks associated with the device and its use.

Unpacking

DANGER: Transport damage

| Electric shock

  • Closely inspect the device for transport damage prior to commissioning!
  • Never operate a device that has sustained transport damage!

NOTICE: Electrostatic discharge

| Material damage

  • Always observe safety measures against electrostatic discharge.

Please observe the following installation sequence:

  1. Remove the interface module from its packaging.
  2. If you want to store the interface module at the installation location, use the outer packaging. This packaging is protected against static charging.
  3. After installing the equipment, dispose of the packaging materials in line with environmental regulations.

If you discover any damage on the interface module, contact LAUDA Service immediately, see Ä Chapter 1.6 “Contact LAUDA”.

Device description

Purpose

The Ethernet USB module was developed for the following purposes:

  • Integrating constant temperature equipment in an Ethernet network.
  • Controlling constant temperature equipment via the LAUDA command set.

The two USB interfaces on the Ethernet USB module have no function. They will therefore not be mentioned again in this operating manual.

Structure

  1. Cover with holes for M3x10 fastening screws
  2. Ethernet interface (10/100 Mbit/s, RJ 45 with 2 LEDs *)
  3. Host USB port, USB 2.0 type A (intended for future expansion)
  4. Device USB port, USB 2.0 type B (intended for future expansion)

The two LEDs indicate whether the interface is connected and whether data is being transmitted (link/activity).

Material damage during repairs

  • The Ethernet USB module is fitted with a micro-SD card for remote maintenance purposes.
  • Only LAUDA service personnel are permitted to remove or exchange the micro-SD card.

Before starting up

Installing the interface module

The interface module is connected to an internal LiBus ribbon cable and inserted into a vacant module slot. The number and arrangement of the module slots vary depending on the device. The module slots are protected by a cover that is screwed onto the casing or attached to the slot opening.

WARNING: Touching live parts

| Electric shock

  • Disconnect the device from the power supply before starting any installation work.

  • Always observe safety measures against electrostatic discharge.

  • The module installation description essentially applies to all LAUDA constant temperature equipment; the example diagrams here show the installation of an analog module in constant temperature equipment from the Variocool product line.

  • Please note that an interface module with a small cover can only be installed in a low module slot. The fitted cover must cover the opening on the module slot completely.

  • You will require two M3 x 10 screws and a suitable screwdriver to secure the interface module.

Please observe the following installation sequence:

  1. Turn off the constant temperature equipment and pull out the mains plug.
  2. If necessary, remove the screws from the cover on the relevant module slot. If necessary, use a slotted screwdriver to prise off the cover.
  3. Remove the cover from the module slot.
    • The module slot is open. The LiBus ribbon cable is attached to the inside of the cover and is easily accessible.
  4. Disconnect the LiBus ribbon cable from the cover.
  5. Connect the red plug on the LiBus ribbon cable to the red socket on the circuit board of the interface module. Plug and socket are reverse polarity protected: Make sure that the lug on the plug is aligned with the recess in the socket.
    • The interface module is correctly connected to the constant temperature equipment.
  6. Slide the LiBus ribbon cable and the interface module into the module slot.
  7. Secure the cover to the casing using two M3 x 10 screws.
    • The new interface on the constant temperature equipment is ready for operation.

Using the module box

You can extend LAUDA constant temperature equipment by two additional module slots using the LiBus module box. The module box is designed for interface modules with a large cover and is connected to constant temperature equipment via a vacant LiBus socket. The socket on the constant temperature equipment bears the label LiBus. Please observe the following installation sequence:

  1. Switch off the constant temperature equipment.
  2. Disconnect the cable on the module box from the constant temperature equipment.
    • The module box is disconnected from the power supply.
  3. Check which interfaces are already present on the constant temperature equipment and module box.
    • Warning: Observe the information on interface module compatibility. Only install an interface module with the same type of interface if operation with several of these interfaces is permitted.
  4. Install the required interface module in the module box. Please read the information on installing the module box in the constant temperature equipment, see chapter “Installing the interface module”.
  5. Position the module box close to the constant temperature equipment.
  6. Connect the cable on the module box to the LiBus socket on the constant temperature equipment.
    • The interfaces on the module box are ready for operation.

Commissioning

Contact assignment of Ethernet interface

The Ethernet interface is equipped with standard type RJ45 sockets (8P8C modular plugs according to CFR Part 68). Standard Ethernet cables that correspond to category CAT5e or higher (8P8C assignment with twisted pairs) must be used for the connection.

Table 1: RJ45 contact assignment

Contact Signal 10Base-T / 100Base-TX
1 Tx+
2 Tx-
3 Rx+
4
5
6 Rx-
7
8

Software update

Older software installed on constant temperature equipment may have to be updated for the new interface to work.

  1. Switch on the constant temperature equipment after installing the new interface.
  2. Check whether a software warning appears on the display:
    • Warning SW too old: Please contact LAUDA Service, see Ä Chapter 1.6 “Contact LAUDA”.
    • No software warning: Operate the constant temperature equipment as normal.

Operation

You can connect your constant temperature equipment directly to a PC via the Ethernet interface or integrate it into a local network so that the equipment can be controlled using a LAUDA command set.

The configuration for the Ethernet interface is stored in the constant temperature equipment. If the interface module is installed in a different device, the settings must be reconfigured there.

Command performance

The command performance achieved via the Ethernet depends on multiple factors, including the following criteria:

  • Ideally, the constant temperature equipment and control station / PC should be located in the same (sub)network, otherwise the number of interconnected routers or switches should be kept to a minimum.
  • A cable connection (LAN) to the control station / PC is usually more reliable for data transmission than a wireless connection (WLAN).
  • Excessive network utilization can slow down the exchange of commands considerably.

Data is exchanged between the constant temperature equipment and an external application via the Ethernet interface in line with the command/ response principle. In other words, a new command is usually only issued once the constant temperature equipment has responded to the previous command.

Under ideal conditions, commands can be sent to the constant temperature equipment every 100 ms. If the network load is high or a WiFi connection is being used, commands may have to be issued at intervals of more than 1 s. A transmission rate of 500 ms is appropriate for many periodic commands (such as Actual value of external temperature ). If this value is used as a control variable in the constant temperature equipment, a slower transmission rate will impair the control action.

Menu structure

The menu only ever shows functions that are available for the current constant temperature equipment. The menu for configuring the interface is integrated in the main menu of the relevant constant temperature equipment:

LAUDA-LRZ-921-Interface-Module-Ethernet-USB-Module-
FIG-9

Interface functions

Interface functions such as read and write commands make it possible to read out the current operating parameters of constant temperature equipment and predefine specific settings and process values.

The interface functions supported by this interface are presented briefly below. They are sorted by topic according to the component affected and assigned a unique ID. Depending on the technical configuration of your constant temperature equipment, the number and scope of the interface functions actually available may vary from the list shown here, see chapter “Availability of the interface functions”.

General Information

Communication takes place according to the master/slave principle. In order to ensure that a request and response are uniquely assigned to one another, commands can only be sent to the constant temperature equipment once a response to the previous command has been received.

All available read and write commands as well as the meaning of any error messages that may occur are presented below. Note the following information relating to syntax and sequencing when using these commands: Numerical values are provided in fixed point format; numbers with up to 4 places in front of the decimal point and up to 2 places after the decimal point are permitted:

Table 2: Acceptable data formats

-XXXX.XX -XXXX.X -XXXX. -XXXX XXXX.XX XXXX.X XXXX. XXXX
-XXX.XX -XXX.X -XXX. -XXX XXX.XX XXX.X XXX. XXX
-XX.XX -XX.X -XX. -XX XX.XX XX.X XX. XX
-X.XX -X.X -X. -X X.XX X.X X. X
-.XX -.X .XX .X
  • Error messages are output with the syntax “ERR_X”:
    • ERR = Identification as an error message
    • X = Error number (whole number without leading zero, maximum of 4 digits)
  • Space ” ” and underscore “_” can be used synonymously.

Ethernet protocol

  • Commands from an external source must always end with CR, CRLF or LFCR. The response from the constant temperature equipment always ends with CRLF. Meaning of the abbreviations:
    • CR = Carriage Return (Hex: 0D)
    • LF = Line Feed (Hex: 0A)
  • In order to ensure that a request and response are uniquely assigned to one another, commands can only be sent to the constant temperature equipment once a response to the previous command has been received.

Example

Example with set point transfer of 30.5 °C to the constant temperature equipment.

PC / control station Constant temperature equipment
“OUT_SP_00_30.5″CRLF
“OK”CRLF

Read commands

  • The interface module recognizes the following read commands, which you can use to retrieve operating data of the constant temperature equipment.

Table 3: Temperature

ID Function Unit, resolu- tion Command
2 Temperature set point [°C] IN_SP_00
3 Bath temperature (outflow temperature) [°C], 0.01 °C IN_PV_00
4 Bath temperature (outflow temperature) [°C],

0.001 °C

| IN_PV_10
5| Controlled temperature (internal / external Pt / external analog / external serial)| [°C]| IN_PV_01
7| External temperature TE (Pt)| [°C]| IN_PV_03
8| External temperature TE (analog input)| [°C]| IN_PV_04
14| External temperature TE (Pt)| [°C],

0.001 °C

| IN_PV_13
25| Overtemperature turn off point T_Max| [°C]| IN_SP_03
27| Limitation of outflow temperature TiH (upper limit)| [°C]| IN_SP_04
29| Limitation of outflow temperature TiH (lower limit)| [°C]| IN_SP_05
33| Set temperature Tset in Safe Mode (safe set point in case of communication interruption).| [°C]| IN_SP_07
158| Actuating signal of master controller in case of external control| [°C]| IN_PV_11

Table 4: Pump

ID Function Unit Command
6 Outflow pressure / pump pressure, relative to the atmosphere [bar]

IN_PV_02
12| Flow rate of the pump

(MID flow controller must be connected)

| [l/min]| IN_PV_07
18| Pump power stage| [–]| IN_SP_01
31| Outflow pressure set point / pump pressure (for pressure control settings)| [bar]| IN_SP_06
37| Flow rate control set point| [L/min]| IN_SP_09
71| Status of flow rate control: 0 = off / 1 = on| [–]| IN_MODE_05
154| Outflow pressure of flow controller, relative to the atmosphere (MID flow controller must be connected)| [bar]| IN_PV_09
156| Pressure limitation set point with active flow rate control (MID flow controller must be connected)| [bar]| IN_SP_10
157| Overpressure turn off point with active flow rate control (MID flow controller must be connected)| [bar]| IN_SP_11

Table 5: Fill level

ID Function Unit Command
9 Bath level (fill level) [–] IN_PV_05
Table 6: Actuating signal
ID Function Unit, resolu- tion Command
11 Resolution of controller actuating signal in per mill

– negative value è device is cooling

– positive value è device is heating

| [‰]| IN_PV_06
13| Controller actuating signal in watts

– negative value è device is cooling

– positive value è device is heating

| [W]| IN_PV_08
Table 7: Cooling| |
ID| Function| Unit| Command
24| Cooling mode: 0 = off / 1 = on / 2 = automatic| [–]| IN_SP_02
Table 8: Safety| |
ID| Function| Unit| Command
35| Timeout communication via interface (1 – 99 seconds; 0 = Off)| [s]| IN_SP_08
73| Status of Safe Mode: 0 = off (inactive) / 1 = on (active)| [–]| IN_MODE_06
Table 9: Control parameters| |
ID| Function| Unit| Command
39| Control parameter Xp| [–]| IN_PAR_00
41| Control parameter Tn (181 = Off)| [s]| IN_PAR_01
43| Control parameter Tv| [s]| IN_PAR_02
45| Control parameter Td| [s]| IN_PAR_03
47| Control parameter KpE| [–]| IN_PAR_04
49| Control parameter TnE| [s]| IN_PAR_05
51| Control parameter TvE| [s]| IN_PAR_06
53| Control parameter TdE| [s]| IN_PAR_07
55| Correction limitation| [K]| IN_PAR_09
ID| Function| Unit| Command
---|---|---|---
57| Control parameter XpF| [–]| IN_PAR_10
61| Control parameter Prop_E| [K]| IN_PAR_15
Table 10: Control| |
ID| Function| Unit| Command
59| Setpoint offset| [K]| IN_PAR_14
67| Control in control variable X: 0 = internal / 1 = external Pt / 2 = external analog / 3 = external serial / 5 = external Ethernet / 6 = external EtherCAT / 7 = external Pt second (only for Integral)| [–]| IN_MODE_01
69| Offset source X for set point: 0 = normal / 1 = external Pt / 2 = external analog / 3 = external serial / 5 = external Ethernet / 6 = external EtherCAT / 7 = external Pt second (only for Integral)| [–]| IN_MODE_04
Table 11: Rights| |
ID| Function| Unit| Command
63| Status of keyboard Master: 0 = free / 1 = blocked| [–]| IN_MODE_00
65| Status of keyboard remote control: 0 = free / 1 = blocked| [–]| IN_MODE_03
Table 12: Status| |
ID| Function| Unit| Command
75| Status of standby: 0 = Device is switched on / 1 = Device is switched off| [–]| IN_MODE_02
107| Device type (e.g.: “ECO”, “INT” or “VC”)| [–]| TYPE
130| Device status: 0 = OK / -1 = fault| [–]| STATUS
131| Fault diagnosis; a 7-digit answer in the format XXXXXXX is output, whereby each character X contains fault information (0 = no fault / 1 = fault).

The following information is defined for the seven places of the answer format:

  • 1st character = Error
  • 2nd character = Alarm
  • 3rd character = Warning
  • 4th character = Overtemperature
  • 5th character = Low level
  • 6th character = 0 (with alarm setting: High level
  • 7th character = External control value missing

| [–]| STAT

Table 13: Programmer

ID Function Unit Command
77 Program used as a basis for further commands [–] RMP_IN_04
88 Current segment number [–] RMP_IN_01
90 Number of preset program sequences [–] RMP_IN_02
92 Current program loop [–] RMP_IN_03
94 Currently running program (0 = no program currently running) [–]

RMP_IN_05
Table 14: Contact input / output| |
ID| Function| Unit| Command
96| Contact input 1: 0 = open / 1 = closed| [–]| IN_DI_01
98| Contact input 2: 0 = open / 1 = closed| [–]| IN_DI_02
100| Contact input 3: 0 = open / 1 = closed| [–]| IN_DI_03
102| Contact output 1: 0 = open / 1 = closed| [–]| IN_DO_01
104| Contact output 2: 0 = open / 1 = closed| [–]| IN_DO_02
106| Contact output 3: 0 = open / 1 = closed| [–]| IN_DO_03
Table 15: SW version| |
ID| Function| Unit| Command
108| Control system| [–]| VERSION_R
109| Protection system| [–]| VERSION_S
110| Remote control (Command)

(remote control unit must be present)

| [–]| VERSION_B
111| Cooling system

(only for devices with active cooling)

| [–]| VERSION_T
112| Analog interface module

(interface module must be present)

| [–]| VERSION_A
113| Flow controller

(flow controller must be present)

| [–]| VERSION_A_1
114| RS 232/485 interface module or Profibus / Profinet (interface module must be present)| [–]| VERSION_V
115| Ethernet interface module (interface module must be present)| [–]| VERSION_Y
116| EtherCAT interface module (interface module must be present)| [–]| VERSION_Z
117| Contact interface module (interface module must be present)| [–]| VERSION_D
118| Solenoid valve for cooling water (solenoid valve must be present)| [–]| VERSION_M_0
---|---|---|---
119| Solenoid valve for automatic filling device (solenoid valve must be present)| [–]| VERSION_M_1
120| Solenoid valve for level controller (solenoid valve must be present)| [–]| VERSION_M_2
121| Solenoid valve, shut off valve 1 (solenoid valve must be present)| [–]| VERSION_M_3
122| Solenoid valve, shut off valve 2 (solenoid valve must be present)| [–]| VERSION_M_4
124| Pump 0| [–]| VERSION_P_0
125| Pump 1| [–]| VERSION_P_1
126| Heating system 0| [–]| VERSION_H_0
127| Heating system 1| [–]| VERSION_H_1
128| External Pt100 interface 0 (module must be present)| [–]| VERSION_E
129| External Pt100 interface 1 (second module must be present)| [–]| VERSION_E_1

Write commands

The interface module recognizes the following write commands, which you can use to transfer values to the constant temperature equipment. The constant temperature equipment confirms each write command with OK, e.g. the reply from the device address A015 is “A015_OK” . In the event of an error, an error message is output as a reply, e.g. “A015_ERR_6” , see Ä Chapter 7.2.5 “Error messages”.

Table 16: Temperature

ID Function Unit Command
1 Temperature set point [°C] OUT_SP_00_XXX.XX
15 Actual value of external temperature (via interface) [°C]

OUT_PV_05_XXX.XX
26| Limitation of outflow temperature TiH (upper limit)| [°C]| OUT_SP_04_XXX
28| Limitation of outflow temperature TiH (lower limit)| [°C]| OUT_SP_05_XXX
---|---|---|---
32| Temperature set point Tset in Safe Mode| [°C]| OUT_SP_07_XXX.XX

Table 17: Pump

ID Function Unit Command
17 Pump power stage (device-specific, e.g. 1 – 6) [–] OUT_SP_01_XXX
30 Set pressure (for pressure control settings) [bar] OUT_SP_06_X.XX
36 Flow rate control set point [l/min] OUT_SP_09_X.XX
70 Activate flow rate control: 0 = switch off / 1 = switch on [–]

OUT_MODE_05_X
155| Pressure limitation set point with active flow rate control

(MID flow controller must be connected and equipped with an inte- grated pressure sensor)

| [bar]| OUT_SP_10_X.X
Table 18: Cooling| |
ID| Function| Unit| Command
23| Cooling mode: 0 = off / 1 = on / 2 = automatic| [–]| OUT_SP_02_XXX
Table 19: Safety| |
ID| Function| Unit| Command
34| Timeout communication via interface (1 – 99 seconds; 0 = Off)| [s]| OUT_SP_08_XX
72| Activation of Safe Mode| [–]| OUT_MODE_06_1
Table 20: Control parameters| |
ID| Function| Unit| Command
38| Control parameter Xp| [–]| OUT_PAR_00_XX.X
40| Control parameter Tn (5 – 180 s; 181 = Off)| [s]| OUT_PAR_01_XXX
42| Control parameter Tv| [s]| OUT_PAR_02_XXX
44| Control parameter Td| [s]| OUT_PAR_03_XX.X
46| Control parameter KpE| [–]| OUT_PAR_04_XX.XX
48| Control parameter TnE (0 – 9000 s; 9001 = Off)| [s]| OUT_PAR_05_XXXX
50| Control parameter TvE (5 = Off)| [s]| OUT_PAR_06_XXXX
52| Control parameter TdE| [s]| OUT_PAR_07_XXXX.X
54| Correction limitation| [K]| OUT_PAR_09_XXX.X
ID| Function| Unit| Command
---|---|---|---
56| Control parameter XpF| [–]| OUT_PAR_10_XX.X
60| Control parameter Prop_E| [K]| OUT_PAR_15_XXX
Table 21: Control| |
ID| Function| Unit| Command
58| Setpoint offset| [K]| OUT_PAR_14_XXX.X
66| Control in control variable X: 0 = internal / 1 = external Pt /

2 = external analog / 3 = external serial / 5 = external Ethernet / 6 = external EtherCAT / 7 = external Pt second (only for Integral)

| [–]| OUT_MODE_01_X
68| Offset source X for set point: 0 = normal / 1 = external Pt /

2 = external analog / 3 = external serial / 5 = external Ethernet / 6 = external EtherCAT / 7 = external Pt second

| [–]| OUT_MODE_04_X
Note (ID 66 and 68): If X = 3, the commands ID 66 and ID 68 cannot be executed in some constant temperature control devices until an external temperature specification has been received (via the command ID 15).

Table 22: Rights

ID Function Unit Command
62 Keyboard Master (equivalent to “KEY”): 0 = unlock / 1 = lock [–]

OUT_MODE_00_X
64| Keyboard remote control unit (command): 0 = unlock / 1 = lock| [–]| OUT_MODE_03_X
Table 23: Status| |
ID| Function| Unit| Command
74| Switch the device on / off (standby)| [–]| START / STOP
Table 24: Programmer| |
ID| Function| Unit| Command
76| Select the program for the subsequent commands (X = 1 – 5). The default program is 5 when the constant temperature equipment is switched on.| [–]| RMP_SELECT_X
78| Start programmer| [–]| RMP_START
79| Pause programmer| [–]| RMP_PAUSE
80| Continue programmer (after pause)| [–]| RMP_CONT
81| End programmer| [–]| RMP_STOP

Availability of the interface functions

  • The following table shows the read and write commands that the Ethernet interface provides for all compatible product lines of constant temperature equipment.
  • Special functions (for example, “[ID 6] outflow pressure / pump pressure”) are only available if the constant temperature equipment is equipped accordingly. Optional accessories may have to be connected correctly and ready for operation.
  • On product lines Integral IN (IN…XT and IN…T), Variocool (NRTL) and PRO, the Ethernet interface is part of the standard equipment.
  • The interface functions available on these product lines are also listed here.

ID

| Integral IN| Variocool|

PRO

|

ECO

| Proline, Proline Kryomats|

**Integral XT ***

---|---|---|---|---|---|---
IN…XT | IN…T | VC NRTL| VC
1| | | | | | | |
2| | | | | | | |
3| | | | | | | |
4| | | | | | | |
5| | | | | | | |
6| | –| –| –| –| –| –|
7| | | | | | | |
8| | | | | | | |
9| | | | | | –| |
11| | | | | | | |
12| | | | –| –| –| –| –
13| | | | | | | |
14| | | | | | | |
15| | | | | | | |
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  • Equipment type as per rating label
    28| | | | | | | |
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    ---|---|---|---|---|---|---|---|---
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    113| | | | –| –| –| –| –
    114| | | | | | | |
    115| –| –| –| | –| | |
    116| | | | | | | |
    117| | | | | | | | v
    118| –| | –| –| | | –| –
    119| –| –| –| –| | –| | –
    120| –| –| –| –| | –| –| –
    121| –| –| –| –| | | –| –
    122| –| –| –| –| | –| –| –
    124| | –| –| –| –| –| –|
    125| | –| –| –| –| –| –|
    126| | | | –| –| –| –| –
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    128| | | | | | | –| –
    129| | | | –| –| –| –| –
    130| | | | | | | |
    131| | | | | | | |

Error messages

The following is a description of the error messages of the interface modules. The string ERR_X or ERR_XX is output after an incorrect command.

Error Description
ERR_2 Incorrect entry (for example, buffer overflow)
ERR_3 Wrong command
ERR_5 Syntax error in value
--- ---
ERR_6 Impermissible value
ERR_8 Module or value not available
ERR_30 Programmer, all segments occupied
ERR_31 Not possible to specify set point (analog set point value input is ON)
ERR_32 TiH<_ TiL
ERR_33 External sensor missing
ERR_34 Analog value not present
ERR_35 Automatically configured
ERR_36 Not possible to specify set point, programmer is running or has been

paused
ERR_37| Not possible to start programmer (analog set point value input is ON)

Establishing a network connection

Before you can address the constant temperature equipment from a PC or in the local network, the following preparations are required:

  1. Use an Ethernet cable (Cat. 5e or higher) to connect the Ethernetinterface of the constant temperature equipment to the remote station. The following systems can be used as remote stations, for example: PC, switch, router or WLAN access point.
  2. Use the constant temperature equipment menu to configure all the settings that the connected system requires for communication.

Warning: Contact your system administrator for the relevant information and also note the following:

  • The Ethernet interface on the constant temperature equipment is prepared in the factory for operation on a DHCP server: When the setting DHCP Client = on is selected, the required configuration is adopted automatically from the network as soon as the cable is connected.
  • If automatic configuration is not required because the equipment is operating on a single system or as a process interface, you must deselect the option DHCP Client . Then enter the network settings manually, see Ä Chapter 7.3.1 “Configuring network settings”.

Configuring network settings

The following requirements must be met before the constant temperature equipment can be connected manually to a system or network:

  • The Ethernet interface is connected to a single system (PC) or a network component (hub, switch, router, WLAN access point) via an Ethernet cable.
  • The local IP address assigned to the constant temperature equipment falls within the same address range as the connected system and is not used by any other system on the network.
  1. Open the … Ethernet LAN Settings menu.
  2. Set the DHCP Client entry to off .
    • The entries for inputting IP addresses are enabled.
  3. Enter the IP addresses for the following entries in succession.

Entering IP addresses

IP addresses are entered byte by byte:

  • Select the Byte 1 field.
  • Enter the first numerical value of the 4-digit IP address and confirm your entry.
  • Repeat the process for the Byte 2 , Byte 3 and Byte 4 fields.
  1. Local IP address:  Enter in the desired IP address, for example 120.0.1.12. Connected systems can access the constant temperature equipment using this IP address, see Ä “Ping request”.
  2. Local mask:  Enter the associated local mask address, for example 255.255.192.0.
  3. Gateway:  Enter the IP address of the gateway (for example 120.0.0.13) that is used for communicating with neighboring networks.
  4. Note: The gateway address must be configured if the constant temperature equipment and control station (e.g. PC) are in different subnetworks (VLANs / LANs).
  5. DNSServer:  Enter the IP address of the DNS server (for example 120.0.1.40) that is used for the name resolution of connected systems.

Note: Entering the address of the DNS server is not required.

IP version

UDetermines which IP version is used ( IPv4 or IPv6 ). The interface only supports IP version IPv4 at present.

Checking the network connection

Ping request

You can use the ping console command from a connected system to easily check whether the interface on the constant temperature equipment is available. Here, a single request (echo request) is sent to the configured local IP address. If the equipment is available, it usually returns four responses together with the respective transmission time. The constant temperature equipment is switched on and connected to a single system or the network.

  1. Open the command line interpreter (console) on a connected system.
    • Starting the console: A command line interpreter can be used on every operating system. On a Windows 10 operating system, for example, it can be accessed as follows: Start (right-click) Run cmd.exe
  2. Enter the command “ping” and the IP address of the constant temperature equipment:
  3. Syntax: “ping XXX.XXX.XXX.XXX”
  4. UExample: ping 120.0.1.12.
  5. Press [Enter] to confirm the entry
    • If available, the constant temperature equipment responds to the request immediately.

If the remote station is unavailable, check whether the following criteria have been met:

LAUDA-LRZ-921-Interface-Module-Ethernet-USB-Module-
FIG-10

  • The constant temperature equipment is connected to the same network as the test system.
  • The test address corresponds to the address displayed in the menu of the constant temperature equipment.
  • The configured network settings are correct.

If necessary, contact your system administrator.

Setting up the process interface

Activating the process interface (Process SST on/off)

The process interface option is only available when the DHCP client is deactivated. It ensures that the constant temperature equipment is always controlled via a fixed IP address.

The Ethernet interface can be configured as a process interface for controllingand monitoring the constant temperature equipment via Ethernet. The equipment can be accessed from your own application; the LAUDA command set is used for data transmission.

Warning: Still only one control system can be connected to the constant temperature equipment via the Ethernet interface. It is not possible to activate the equipment simultaneously from multiple systems. As soon as you select the PC control option in the menu of theconstant temperature equipment, you can establish the connection from the control system.

The constant temperature equipment is connected via the Ethernet interface and can be accessed from the network or single system. The network settings have been configured manually.

  1. Enter the number for the Port.
    • The value determines which port number is used to establish the connection to the Process SST process interface. Port 54321 is the factory default setting, all free port numbers between 49152 – 65535 are permitted.
  2. Activate the Process SST function:
    • Open the Modules Ethernet Process SST off / on menu.
    • Select the option on and confirm your selection.

Terminal

A terminal program can be used to establish the connection to the constant temperature equipment. For example, the freeware RealTerm , which can be downloaded from the following address: https://realterm.sourceforge.io/. The following settings are required:

LAUDA-LRZ-921-Interface-Module-Ethernet-USB-Module-
FIG-11

  1. Start the terminal program on the connected system.
  2. Open the Port tab.
  3. Enter the configured IP address and port number of the Ethernet interface into the Port field. The IP address and port number must be separated by a colon.
  4. Send a test command such as the read command “TYPE” to the constant temperature equipment.
    • If the device type designation, for example “ECO”, is received in response, the connection has been set up correctly.

Setting up the virtual COM port

Set up a virtual COM port on the connected PC for easy communication via the activated process interface. The software used to control the constant temperature equipment must be capable of transmitting serial commands via Ethernet. If the software cannot do this, install driver software on the control system that emulates the Ethernet interface as a serial port. The “Virtual Serial Port Emulator” is an example of suitable software and is also available as freeware.

“Virtual Serial Port Emulator” software is not a LAUDA product. LAUDA cannot therefore offer any guarantees or support for the software.

Checking the connection monitoring function

The Ethernet USB module checks an existing TCP connection automatically every 15 seconds. If the function detects an interruption in the connection, a corresponding error message is sent to the connected system. A connected system must then initiate the establishment of a new connection.

Warning: The connected PC can be configured to attempt to re-establish a lost connection automatically. In this case, the PC must be configured to wait a minimum of 15 seconds before each attempt to re-establish a connection.

Maintenance

The interface module is maintenance-free. Any dust and dirt deposits should be cleaned from the connections on the interface module on a regular basis, especially if the interfaces are not being used.

WARNING: Live parts in contact with cleaning agent

| Electric shock, material damage

  • Disconnect the device from the mains supply before starting any cleaning work.
  • Water and other fluids should not be allowed to enter the device.

NOTICE: Repairs performed by unauthorized persons

| Material damage

  • Only specialized personnel are permitted to carry out repairs.
  1. Use a damp cloth or brush to remove any dust and dirt deposits.
  2. When using compressed air: Always set a low working pressure to prevent mechanical damage to the connections.

If you have any questions about technical modifications, please contact LAUDA Service, see Ä Chapter 1.6 “Contact LAUDA”.

Faults

If a fault occurs, the interface distinguishes between different message types, e.g. alarms, errors and warnings. The procedure for rectifying a fault depends on the device. Follow the corresponding instructions in the operating manual accompanying the constant temperature equipment.

If you are unable to rectify a fault, please contact LAUDA Service, see Ä Chapter 1.6 “Contact LAUDA”.

Error

The Ethernet interface recognizes the following error messages:

Code Remedy
1809 Restart the constant temperature equipment. If the message persists,

contact LAUDA Service, see Chapter 1.6 “Contact LAUDA”.
1824| Ethernet USB module and constant temperature equipment are not compatible. Note down the relevant software versions and contact LAUDA Service.

Warning: The Ethernet interface recognizes the following warnings:

Code Remedy
1803 Restart the constant temperature equipment. If the message persists,

contact LAUDA Service, see Chapter 1.6 “Contact LAUDA”.
1804| Restart the constant temperature equipment. If the message persists, contact LAUDA Service.
1833| Check if the network cable has been connected correctly. Is the yellow LED on the Ethernet interface flashing?

If the DHCP client settings have been configured manually: Check the DNS server configuration and make sure that the preset IP address is correct.

If it has been connected and configured correctly, yet the warning remains active, contact LAUDA Service.

1838 – 1840, 1846, 1852, 1854| If these messages persist for longer, contact LAUDA Service.
1847| Inform your system administrator and check the availability of the NTP server.
1849| Inform your system administrator and check the availability of the DHCP server.
1850| The manually assigned IP address already exists in the network. Enter a free IP address into the constant temperature equipment.
1853| The Ethernet USB module has detected an interruption in the TCP connection and is restarting with the current valid settings. After approximately 15 seconds, the connected system can attempt to establish the connection again; see Chapter 7.4.3 “Checking the connection monitoring function”.

Decommissioning

WARNING: Touching live parts

| Electric shock

  • Disconnect the device from the power supply before starting any installation work.
  • Always observe safety measures against electrostatic dis- charge.

Decommission the interface module by removing it from the constant temperature equipment:

  1. Observe the information in Chapter 5.1 “Installing the interface module”. Proceed in reverse order to remove.
  2. Always attach the LiBus connecting cable to the inside of the module slot cover.
  3. Fit the cover to the vacant module slot to protect the constant temperature equipment against the ingress of dirt.
  4. Protect the interface module against static charging before placing it in storage. The storage location must meet the ambient conditions specified in the technical data.
  5. If you intend to dispose of the module, please read the information in “Old device”.

Disposal

Packaging

The packaging normally consists of environmentally friendly materials that can be easily recycled when properly disposed of.

  1. Dispose of packaging materials in accordance with the applicable disposal guidelines in your region.
  2. Comply with the requirements of Directive 94/62/EC (packaging and packaging waste) if disposing of the product in a member state of the EU.

Old device

The device must be properly decommissioned and disposed of at the end of its life cycle.

  1. Dispose of the device in accordance with the applicable disposal guidelines in your region.
  2. Comply with Directive 2012/19/EU (WEEE Waste of Electrical and Electronic Equipment) if disposing of the product takes place in a member state of the EU.

Technical data

Feature Unit Value / version

Interface module
Catalog number| [–]| LRZ 921
Size of module slot, W x H| [mm]| 51 x 27
External dimensions (excluding connec- tors), W x H x D| [mm]| 56 x 37 x 82
Weight| [kg]| 0.1
Operating voltage| [V DC]| 24
Maximum current consumption| [A]| 0.1
Ethernet connection| |
Version| [–]| 1x RJ45 socket, 8‑pin
USB interface (host)| |
Version| [–]| 1x USB 2.0 socket, type A

(intended for future expansion)

USB interface (device)| |
Version| [–]| 1x USB 2.0 socket, type B

(intended for future expansion)

Ambient conditions| |
Air humidity| [%]| Maximum relative air humidity 80 % at 31 °C and up to 40 °C, 50 % with linear decrease.
Ambient temperature range| [°C]| 5 – 40
Temperature range for storage| [°C]| 5 – 50

Contact

Manufacturer

  • LAUDA DR. R. WOBSER GMBH & CO. KG ◦ Laudaplatz 1 ◦ 97922 Lauda-Königshofen
  • LAUDA DR. R. WOBSER GMBH & CO. KG Laudaplatz 1 97922 Lauda-Königshofen Germany
  • Telephone: +49 (0)9343 503-0
  • Fax: +49 (0)9343 503-222
  • E-mail: info@lauda.de
  • Internet: https://www.lauda.de

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