aspar SDM-6TE 6 Temperatue Inputs Expansion Module User Manual

: June 9, 2024
: aspar

Table of Contents

aspar SDM-6TE 6 Temperatue Inputs Expansion Module
Safety rules
Module Features
Communication configuration
- Communication settings
Switches
Front panel removing
Indicators
Module Connection
Modules Registers
Configuration software
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References
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aspar SDM-6TE 6 Temperatue Inputs Expansion Module

Thank you for choosing our product.

This manual will help you with proper support and proper operation of the device.
The information contained in this manual have been prepared with utmost care by our professionals and serve as a description of the product without incurring any liability for the purposes of commercial law.
This information does not release you from the obligation of own judgement and verification.
We reserve the right to change product specifications without notice.
Please read the instructions carefully and follow the recommendations contained therein.
WARNING!
Failure to follow instructions can result in equipment damage or impede the use of the hardware or software..

Safety rules

Before first use, refer to this manual
Before first use, make sure that all cables are connected properly
Please ensure proper working conditions, according to the device specifications (eg: supply voltage, temperature, maximum power consumption)
Before making any modifications to wiring connections, turn off the power supply

Module Features

Purpose and description of the module

The SDM-6TE module allows you to measure the temperature with attached popular sensor Pt100, Pt500, Pt1000, Ni100, KTY81-110, NTC (Carel) and thermocouple (type J, K, T, N, S, R, B). In addition, it is possible to measure voltages in the range 256mV (10μV resolution) and to 2048mV (100μV resolution) as well as the measurement of resistance to 8kΩ.
The device has a set of six inputs for the temperature measurement. It is possible to 2- or 3-wire measurement of sensors Pt100, Ni100, Pt500, Pt1000 and 2-wire measurement thermocouples and other sensors. In addition, the module is equipped with 2 configurable digital outputs (alarms).
Values are read via RS485 (Modbus), so we can easily integrate the module with popular PLCs, HMI or PC equipped with the appropriate adapter.
This module is connected to the RS485 bus with twisted-pair wire. Communication is via MODBUS RTU or MODBUS ASCII. The use of 32-bit ARM core processor provides fast processing and quick communication. The baud rate is configurable from 2400 to 115200.
The module is designed for mounting on a DIN rail in accordance with DIN EN 5002.
The module is equipped with a set of LEDs used to indicate the status of inputs and outputs useful for diagnostic purposes and helping to find errors.
Module configuration is done via USB by using a dedicated computer program. You can also change the parameters using the MODBUS protocol.

Technical Specifications

__

Power Supply

| Voltage| 10-30 VDC; 10-28VAC
---|---|---
Maximum Current| DC: 52 mA @ 24VDC AC: 62 mA @ 24VAC
Maximum power consumption| DC: 1,25W; AC: 1,5VA
__

__

Inputs

Digital outputs

| Maximum current and voltage| 500mA / 55V
Isolation| 1500 Vrms
__

Temperature

| Work| -10 °C – +50°C
Storage| -40 °C – +85°C
__

__

Connectors

Size

| Height| 110 mm
---|---|---
Lenght| 62 mm
Width| 88 mm
Interface| RS485| Up to 128 devices

Dimensions of the product
Look and dimensions of the module are shown below. The module is mounted directly to the rail in the DIN industry standard. Power connectors, communication and IOs are at the bottom and top of the module. USB connector configuration and indicators located on the front of the module.

aspar-SDM-6TE-6-Temperatue-Inputs-Expansion-Module-
fig-2

Communication configuration

Grounding and shielding
In most cases, IO modules will be installed in an enclosure along with other devices which generate electromagnetic radiation. Examples of these devices are relays and contactors, transformers, motor controllers etc. This electromagnetic radiation can induce electrical noise into both power and signal lines, as well as direct radiation into the module causing negative effects on the system. Appropriate grounding, shielding and other protective steps should be taken at the installation stage to prevent these effects. These protective steps include control cabinet grounding, module grounding, cable shield grounding, protective elements for electromagnetic switching devices, correct wiring as well as consideration of cable types and their cross sections.

Network Termination

Transmission line effects often present a problem on data communication networks.
These problems include reflections and signal attenuation.
To eliminate the presence of reflections from the end of the cable, the cable must be terminated at both ends with a resistor across the line equal to its characteristic impedance. Both ends must be terminated since the direction of propagation is bidirectional. In the case of an RS485 twisted pair cable this termination is typically 120 Ω.

Setting Module Address in RS485 Modbus Network

The following table shows how to set switch to determine the address of the module.
The module address is set with the switches in the range of 0 to 127. Addresses From 128 to 255 can by set via RS485 or USB.
Switch| Adress
---|---
SW1| +1
SW2| +2
SW3| +4
SW4| +8
SW5| +16
SW6| +32
SW7| +64
Ex. if switches 1, 3 and 5 are on than module addres is: Address = 1 + 4 + 16 = 21

Types of Modbus Registers
There are 4 types of variables available in the module

Type| Beginning adress| Variable| Access| Modbus Command
---|---|---|---|---
1| 00001| Digital Outputs| Bit

Read & Write

| 1, 5, 15
2| 10001| Digital Inputs| Bit Read| 2
3| 30001| Input Registers| Registered Read| 3
4| 40001| Output Registers| Registered Read & Write| 4, 6, 16

Communication settings

The data stored in the modules memory are in 16-bit registers. Access to registers is via MODBUS RTU or MODBUS ASCII.

Default settings
You can restore the default configuration by the switch SW8 (see 3.5.2 – Restore the default configuration) Baud rate| 19200
---|---
Parity| Nie
Data bits| 8
Stop bits| 1
Reply Delay [ms]| 0
Modbus Type| RTU
Restore the default configuration
- To restore the default configuration:
- turn off the power
- turn on the switch SW8
- turn on the power
- when power and communication LED start blinking alternately than turn off the switch SW8
- Caution! After restoring the default configuration all values stored in the registers will be cleared as well.
Configuration registers
Modbus| Dec| Hex| Name| Values
---|---|---|---|---

40003

| ****

2

| ****

0x02

| ****

Baud rate

| 0 – 2400

1 – 4800

2 – 9600

3 – 19200

4 – 38400

5 – 57600

6 – 115200

other – value * 10

40005

| ****

4

| ****

0x04

| ****

Parity

| 0 – none

1 – odd

2 – even

3 – always 1

4 – always 0

40004| 3| 0x03| Stop Bits LSB| 1 – one stop bit 2 – two stop bit
40004| 3| 0x03| Data Bits MSB| 7 – 7 data bits

8 – 8 data bits

40006| 5| 0x05| Response delay| Time in ms
40007| 6| 0x06| Modbus Mode| 0 – RTU

1 – ASCII

Switches

Switch	Function	Description
1	Module address +1	****

Setting module address from 0 to 127

8

| Restoring default settings| Restoring default settings

(see 3.5.1 – Default settings i 3.5.2 – Restore the default configuration).

Front panel removing

To remove the panel and gain access to the switch, you must pry open the panel using a thin tool (eg a small screwdriver) as in the picture below.

aspar-SDM-6TE-6-Temperatue-Inputs-Expansion-Module-
fig-4

Indicators

aspar-SDM-6TE-6-Temperatue-Inputs-Expansion-Module-
fig-5

Indicator	Description
Power supply	LED indicates that the module is correctly powered.
Communication	The LED lights up when the unit received the correct packet and

sends the answer.
Inputs state| LED indicates that the signal to input is connected.
Outputs state| LED indicates that the output is on.

Module Connection

Temperature inputs

aspar-SDM-6TE-6-Temperatue-Inputs-Expansion-Module-
fig-6

Digital outputs

aspar-SDM-6TE-6-Temperatue-Inputs-Expansion-Module-
fig-7

Communication, power supply

aspar-SDM-6TE-6-Temperatue-Inputs-Expansion-Module-
fig-8

Modules Registers

Registered access

Modbus| Dec| Hex| Register Name| Access| Description
---|---|---|---|---|---
30001| 0| 0x00| Version/Type| Read| Version and Type of the device
30002| 1| 0x01| Switches| Read| Switches state
40003| 2| 0x02| Boud rate| Read & Write| RS485 baud rate
40004| 3| 0x03| Stop bits| Read & Write| No of Stop bits
40005| 4| 0x04| Parity| Read & Write| Parity bit
40006| 5| 0x05| Respons Delay| Read & Write| Response delay in ms
40007| 6| 0x06| Modbus Mode| Read & Write| Modbus Mode (ASCII or RTU)
40033| 32| 0x20| Received packets LSB| Read & Write| __

No of received packets

40034| 33| 0x21| Received packets MSB| Read & Write
40035| 34| 0x22| Incorrect packets LSB| Read & Write| __

No of received packets with error

40036| 35| 0x23| Incorrect packets MSB| Read & Write
40037| 36| 0x24| Sent packets LSB| Read & Write| __

No of sent packets

40038| 37| 0x25| Sent packets MSB| Read & Write
30051| 50| 0x32| Inputs| Read| Connected sensors

Bit in high state → sensor is connected

40052| 51| 0x33| Outputs| Read| Alarms state bit 6 and 7 alarm outputs
30053| 52| 0x34| Temperature 1| Read| __

Temperature or measured analog

__

in mV・10 for voltage to 2048mV in mV・100 for voltage to 256mV in °C・10 for temperature

in Ω for resistance

30054| 53| 0x35| Temperature 2| Read
30055| 54| 0x36| Temperature 3| Read
30056| 55| 0x37| Temperature 4| Read
30057| 56| 0x38| Temperature 5| Read
30058| 57| 0x39| Temperature 6| Read
30059| 58| 0x3A| Alarm temperature 1| Read| Alarm temperature for alarm output 1
30060| 59| 0x3B| Alarm temperature 2| Read| Alarm temperature for alarm output 2
30061| 60| 0x3C| Junction temperature| Read| Module junction temperature
30062| 61| 0x3D| Measurement current| Read| Measurement current
40063| 62| 0x3E| MAX alarm level 1| Read & Write| __

__

If the temperature exceeds this value the corresponding alarm flag is set

40064| 63| 0x3F| MAX alarm level 2| Read & Write
40065| 64| 0x40| MAX alarm level 3| Read & Write
40066| 65| 0x41| MAX alarm level 4| Read & Write
40067| 66| 0x42| MAX alarm level 5| Read & Write
40068| 67| 0x43| MAX alarm level 6| Read & Write
40069| 68| 0x44| MIN alarm level 1| Read & Write| If the temperature is below this value corresponding alarm flag is set
40070| 69| 0x45| MIN alarm level 2| Read & Write
40071| 70| 0x46| MIN alarm level 3| Read & Write
40072| 71| 0x47| MIN alarm level 4| Read & Write|
---|---|---|---|---|---
40073| 72| 0x48| MIN alarm level 5| Read & Write
40074| 73| 0x49| MIN alarm level 6| Read & Write
40075| 74| 0x4A| Alarm settings 1| Read & Write| __

Alarm settings:

__

0 – alarm due to the current temperature

1 – Remember the value of the alarm, until reset by the master via Modbus

40076| 75| 0x4B| Alarm settings 2| Read & Write
40077| 76| 0x4C| Alarm settings 3| Read & Write
40078| 77| 0x4D| Alarm settings 4| Read & Write
40079| 78| 0x4E| Alarm settings 5| Read & Write
40080| 79| 0x4F| Alarm settings 6| Read & Write
40081| 80| 0x50| Constant junction temperature| Read & Write| Value of junction temperature
40082| 81| 0x51| Junction temperature offset| Read & Write| Junction temperature offset
__

40083

| __

82

| __

0x52

| __

Input 1 settings

| __

Read & Write

| Analog input mode:

__

0 – input disabled

1 – voltage to 2048mV 2 – voltage to 256mV 3 – J thermocouple

4 – K thermocouple 5 – T thermocouple 6 – N thermocouple 7 – S thermocouple 8 – R thermocouple 9 – B thermocouple 10 – Pt100 3-wire 11 – Pt100 2-wire

12 – resistance to 8kΩ 13 – NI100

14 – KTY81-110

15 – Pt500 3-wire 16 – Pt500 2-wire 17 – Pt1000 3-wire 18 – Pt1000 2-wire

19 – NTC Carel 2-wire1

__

+32 – junction temperature is taken from register 40081 “Constant junction temperature”

__

40084

| __

83

| __

0x53

| __

Input 2 settings

| __

Read & Write

__

40085

| __

84

| __

0x54

| __

Input 3 settings

| __

Read & Write

__

40086

| __

85

| __

0x55

| __

Input 4 settings

| __

Read & Write

__

40087

| __

86

| __

0x56

| __

Input 5 settings

| __

Read & Write

__

40088

| __

87

| __

0x57

| __

Input 6 settings

| __

Read & Write

__

40089

| __

__

88

| __

__

0x58

| Output 1 settings| __

__

Read & Write

| Alarm output settings 0 – output is set by PLC

+1 – temperature from input 1

+2 – temperature from input 2

+4 – temperature from input 3

+8 – temperature from input 4

+16 – temperature from input 5

+32 – temperature from input 6

40090| 89| 0x59| Output 2 settings| Read & Write| +256 – Output is set if value is greater than Alarm Value (register 40091 or 40092) („cooling”)

+512 – Output is set if value is less than Alarm Value ( register 40091 or 40092)(„heating”)

+1024 – The lowest value from selected inputs

+2048 – The greatest value from selected inputs (if not select either of the two above options than

is used average value of selected inputs)

---|---|---|---|---|---
40091| 90| 0x5A| Alarm Value 1| Read & Write|

Alarm value for outputs

40092| 91| 0x5B| Alarm Value 2| Read & Write
40093| 92| 0x5C| Alarm hysteresis 1| Read & Write| The hysteresis value for alarm outputs
40094| 93| 0x5D| Alarm hysteresis 2| Read & Write
40095| 94| 0x5E| Input resistance 1| Read & Write|

Lead wire resistance for each input

40096| 95| 0x5F| Input resistance 2| Read & Write
40097| 96| 0x60| Input resistance 3| Read & Write
40098| 97| 0x61| Input resistance 4| Read & Write
40099| 98| 0x62| Input resistance 5| Read & Write
40100| 99| 0x63| Input resistance 6| Read & Write

Bit access

Modbus| Dec| Hex| Register Name| Access| Description
---|---|---|---|---|---
801| 800| 0x320| Input 1| Read| Set when the sensor is connected
802| 801| 0x321| Input 2| Read| Set when the sensor is connected
803| 802| 0x322| Input 3| Read| Set when the sensor is connected
804| 803| 0x323| Input 4| Read| Set when the sensor is connected
805| 804| 0x324| Input 5| Read| Set when the sensor is connected
806| 805| 0x325| Input 6| Read| Set when the sensor is connected
817| 816| 0x330| Alarm 1| Read| Alarmu state 1
818| 817| 0x331| Alarm 2| Read| Alarmu state 2
819| 818| 0x332| Alarm 3| Read| Alarmu state 3
820| 819| 0x333| Alarm 4| Read| Alarmu state 4
821| 820| 0x334| Alarm 5| Read| Alarmu state 5
822| 821| 0x335| Alarm 6| Read| Alarmu state 6
823| 822| 0x336| Digital output 1| Read & Write| State of digital output 1
824| 823| 0x337| Digital output 2| Read & Write| State of digital output 2

Configuration software

Modbus Configurator is software that is designed to set the module registers responsible for communication over Modbus network as well as to read and write the current value of other registers of the module. This program can be a convenient way to test the system as well as to observe real-time changes in the registers.

aspar-SDM-6TE-6-Temperatue-Inputs-Expansion-Module-
fig-9

Communication with the module is done via the USB cable. The module does not require any drivers.
Configurator is a universal program, whereby it is possible to configure all available modules.

aspar-SDM-6TE-6-Temperatue-Inputs-Expansion-Module-
fig-10