AB 1785-L20E, Ether Net IP Controller Installation Guide

July 8, 2024
AB

AB 1785-L20E, Ether Net IP Controller

AB-1785-L20E,-Ether-Net-IP-Controller-Product

Product Information

Specifications:

  • Catalog Numbers: 1785-L20E, 1785-L40E, 1785-L80E, Series F
  • Publication: 1785-IN063B-EN-P (January 2006)

Product Usage Instructions

  • About This Publication:
    This document provides installation and troubleshooting instructions for the Ethernet PLC-5 programmable controller. For more details, refer to the documents listed in the manual or contact Rockwell Automation representative.

  • Installation Instructions:
    Ensure you are using a Series F Ethernet PLC-5 programmable controller. Follow the step-by-step installation guide provided in the manual to set up the system hardware correctly.

  • Troubleshooting:
    If you encounter any issues with the controller, refer to the troubleshooting section of the manual for guidance on identifying and resolving common problems.

  • Controller Specifications:
    Review the controller specifications to understand its capabilities and limitations. Ensure the controller is suitable for your specific application requirements.

  • Rockwell Automation Support:
    If you need further assistance or have technical questions, contact Rockwell Automation support for expert help and guidance.

FAQ:

  • Q: What should I do if I encounter a shock hazard while using the controller?
    A: If you see a shock hazard label on or inside the equipment, be cautious as dangerous voltage may be present. Avoid direct contact and seek professional assistance if needed.

  • Q: How can I ensure proper environmental conditions for the controller?
    A: The controller is designed for specific environmental conditions to prevent personal injury. Ensure the enclosure is accessed only with a tool and follow enclosure type ratings for compliance.

IMPORTANT
In this document, we assume you are using a Series F Ethernet PLC-5 programmable controller.

About This Publication
This document describes how to install and troubleshoot your Ethernet PLC-5 programmable controller. For more information, see the documents listed on the following page or contact your local Rockwell Automation representative.

These installation instructions:

  • provide the basic information you need to get your system up and running.
  • provide specific bits and switch settings for modules.
  • include high-level procedures with cross-references to other manuals for more detail.

IMPORTANT
In this document, we assume you are using a Series F Ethernet PLC-5 programmable controller.

Important User Information

Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.ab.com/manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.

  • No patent liability is assumed by Rockwell Automation, Inc. to use of information, circuits, equipment, or software described in this manual.
  • Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc. is prohibited.
  • Throughout this manual, we use notes to make you aware of safety considerations.

WARNING:
Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

IMPORTANT
Identifies information that is critical for successful application and understanding of the product.

ATTENTION
Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you:

  • identify a hazard
  • avoid a hazard
  • recognize the consequence

SHOCK HAZARD
Labels may be located on or inside the equipment to alert people that dangerous voltage may be present.

BURN HAZARD
Labels may be located on or inside the equipment to alert people that surfaces may be in dangerous temperatures.

Environment and Enclosure

ATTENTION

  • This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II applications (as defined in IEC publication 60664-1), at altitudes up to 2000 meters without derating.
  • This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR Publication 11. Without appropriate precautions, there may be potential difficulties ensuring electromagnetic compatibility in other environments due to conducted as well as radiated disturbance.
  • This equipment is supplied as “open type” equipment. It must be mounted within an enclosure that is suitably designed for those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting from accessibility to live parts. The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional information regarding specific enclosure-type ratings that are required to comply with certain product safety certifications.
  • Besides this publication, see:
    • Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley publication 1770-4.1, for additional installation requirements.
    • NEMA Standards publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of protection provided by different types of enclosure.

Prevent Electrostatic Discharge

ATTENTION
This equipment is sensitive to electrostatic discharge that can cause internal damage and affect normal operation. Follow these guidelines when you handle this equipment.

  • Touch a grounded object to discharge potential static.
  • Wear an approved grounding wrist strap.
  • Do not touch connectors or pins on component boards.
  • Do not touch circuit components inside the equipment.
  • Use a static-safe workstation, if available.
  • Store the equipment in appropriate static-safe packaging when not in use.

North American Hazardous Location Approval

The following information applies when operating this equipment in hazardous locations:
Products marked “CL I, DIV 2, GP A, B, C, D” are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous locations only. Each product is supplied with markings on the rating nameplate indicating the hazardous location temperature code. When combining products within a system, the most adverse temperature code (lowest “T” number) may be used to help determine the overall temperature code of the system. Combinations of equipment in your system are subject to investigation by the local Authority Having Jurisdiction at the time of installation.

EXPLOSION HAZARD

WARNING

  • Do not disconnect equipment unless power has been removed or the area is known to be non-hazardous.
  • Do not disconnect connections to this equipment unless power has been removed or the area is known to be non-hazardous. Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or other means provided with this product.
  • Substitution of components may impair suitability for Class I, Division 2.
  • If this product contains batteries, they must only be changed in an area known to be nonhazardous.

Related User Manual
The related user manual contains detailed information about configuring, programming, and using an Ethernet PLC-5 controller. To obtain a copy of the Enhanced and Ethernet PLC-5 Programmable Controllers User Manual, publication 1785-UM012, you can:

  • view or download an electronic version from the Internet at www.rockwellautomation.com/literature.
  • contact your local distributor or Rockwell Automation representative to place an order.

Additional Related Documentation
The following documents contain additional information related to the products described in this document.

For More Information About| See This Publication| Number
---|---|---
Ethernet PLC-5 programmable controllers| Enhanced and Ethernet PLC-5 Programmable Controllers User Manual| 1785-UM012
Universal 1771 I/O chassis| Universal I/O Chassis Installation Instructions| 1771-2.210
Power supply| Power Supply Modules (1771-P4S, -P6S, -P4S1, -P6S1) Installation Instructions| 1771-2.135
DH+ network, extended-local I/O| Enhanced and Ethernet PLC-5 Programmable Controllers User Manual| 1785-UM012
Data Highway/Data Highway Plus/Data Highway II/Data Highway-485 Cable Installation Instructions| 1770-6.2.2
Communication cards| 1784-KT x Communication Interface Card User Manual| 1784-6.5.22
Cables| Enhanced and Ethernet PLC-5 Programmable Controllers User Manual| 1785-UM012
Batteries| Allen-Bradley Guidelines for Lithium Battery Handling and Disposal| AG-5.4
Grounding and wiring Allen-Bradley programmable controllers| Allen-Bradley Programmable Controller Wiring and Grounding Guidelines| 1770-4.1
Terms and definitions| Allen-Bradley Industrial Automation Glossary| AG-7.1

About the Controllers

The following illustrations indicate the controller’s front panel components.

PLC-5/20E, -5/40E and -5/80E, Controller Front Panel

AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(1\)

Additional System Components
Along with your controller, you need the following components to complete a basic system.

Product Cat. No.
Lithium battery 1770-XYC
I/O chassis 1771-A1B, -A2B, -A3B, -A3B1, -A4B
Power supply 1771-P4S, -P6S, -P4S1, -P6S1
Personal computer

New Features

The controllers contain an RJ-45 connector for the Channel 2 communication port.

The controllers provide additional Channel 2 port configuration and status:

  • BOOTP, DHCP, or Static entry of IP address
  • Auto Negotiate speed selection
  • Full/Half Duplex port setting
  • 10/100-speed selection
  • Email client functionality
  • Enable/Disable HTTP Web Server
  • Enable/Disable SNMP functionality

AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(2\)

To see or activate the new configuration and status features:

  1. Open or create a project in RSLogix 5 software, version 7.1 or later.
  2. Click on the Channel Configuration menu. You see the Edit Channel Properties menu.
  3. Click on the Channel 2 tab.

BOOTP, DHCP, or Static Entry of IP Address
As shown in the following screen capture, you can select between a static or dynamic network configuration.

  • The default is Dynamic Network Configuration Type and Use BOOTP to obtain network configuration.
  • If you choose a dynamic network configuration, you can change the default BOOTP to DHCP.
  • If you choose a static network configuration type, you must enter the IP address.

Similarly, if you have a dynamic network configuration, DHCP or BOOTP assigns the controller’s hostname. With a static configuration, you assign the hostname.

When you create a hostname, consider these naming conventions.

  • The hostname can be a text string of up to 24 characters.
  • The hostname can contain alpha (A to Z) numeric (0 to 9) and may contain a period and minus sign.
  • The first character must be alpha.
  • The last character must not be a minus sign.
  • You cannot use blank spaces or space characters.
  • The hostname is not case-sensitive.

Auto Negotiate Speed SelectionIn the Edit Channel 2 properties box, you can either leave the Auto Negotiate box unchecked, which forces the port setting to a particular speed and duplex port setting, or you may check the Auto Negotiate box, which lets the controller negotiate a speed and duplex port setting.

If you check Auto Negotiate, the port setting lets you select the range of speed and duplex settings that the controller negotiates. The default port setting with Auto Negotiate checked is 10/100 Mbps Full Duplex/Half Duplex, which lets the controller negotiate any of its four available settings. The following table lists the order of negotiation for each setting.

Setting| 100 Mbps Full Duplex| 100 Mbps Half Duplex| 10 Mbps Full Duplex| 10 Mbps Half Duplex
---|---|---|---|---
10/100 Mbps Full Duplex/Half Duplex| 1st| 2nd| 3rd| 4th
100 Mbps Full Duplex or 100 Mbps Half Duplex| 1st| 2nd| | 3rd
100 Mbps Full Duplex or 10 Mbps Full Duplex| 1st| | 2nd| 3rd
100 Mbps Half Duplex or 10 Mbps Full Duplex| | 1st| 2nd| 3rd
100 Mbps Full Duplex| 1st| | | 2nd
100 Mbps Half Duplex| | 1st| | 2nd
10 Mbps Full Duplex| | | 1st| 2nd
10 Mbps Half Duplex Only| | | | 1st

The unchecked Auto Negotiate box and corresponding port settings are shown below.

The checked Auto Negotiate box and corresponding port settings are shown below.

Email Client Functionality
The controller is an email client that sends an email triggered by a message instruction via a mail relay server. The controller uses standard SMTP protocol to forward the email to the relay server. The controller does not receive email. You must enter the SMTP Server’s IP address into the text box as shown in the following dialog.

The controller supports login authentication. If you want the controller to authenticate to the SMTP server, check the SMTP authentication box. If you select authentication, you must also use a username and password for each email.

To create an email:

  1. Create a message instruction similar to the one below.AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(8\)
    • The destination (to), the reply (from), and the body (text) are stored as strings in elements of separate ASCII string files.
    • If you want to send an email to a specific recipient when a controller application generates an alarm or reaches a certain condition, program the controller to send the message instruction to the destination of the email.
  2. Verify the rung.
  3. Click on Setup Screen. A dialog appears like the one below.AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(9\)
    • The three Data fields display the string values of the ST file element addresses.
  4. To send an email, enter the appropriate information into the Data fields and Username and Password, if Authentication is enabled.

Examine the Error Code (denoted in Hex) and Error Description areas within the General tab to see if the message was successfully delivered.

Error Code (hex) Description
0x000 Delivery successful to the mail relay server.
0x002 Resource unavailable. The email object was unable to obtain memory

resources to initiate the SMTP session.
0x101| SMTP mail server IP address not configured.
0x102| To (destination) address not configured or invalid.
0x103| From (reply) address not configured or invalid.
0x104| Unable to connect to SMTP mail server.
0x105| Communication error with SMTP server.
0x106| Authentication required.
0x017| Authentication failed.

Channel 2 Status
To check the status of channel 2:

  1. In your RSLogix 5 software project, click on Channel Status. You see the Channel Status menu.
  2. Click on the Channel 2 tab.
  3. Click on the Port tab. You see the status for each port configuration.AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(10\)

Enable/Disable HTTP Web Server
You can disable the HTTP web server functionality from within the Channel 2 Configuration by unchecking the HTTP Server Enable check box shown below.

AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(11\)

The default (checked box) lets you connect to the controller using a web browser. Although this parameter can be downloaded to the controller as part of a program download or changed and applied while online with the controller, you must cycle power to the controller for the change to take effect.

Enable/Disable Simple Network Management Protocol (SNMP)

  • You can disable the controller’s SNMP functionality from within the Channel 2 Configuration by unchecking the SNMP Server Enable check box as shown above.
  • The default (checked box) lets you connect to the controller using an SNMP client. Although this parameter can be downloaded to the controller as part of a program download or changed and applied while online with the controller, you must cycle power to the controller for the change to take effect.

Install the System Hardware

This illustration shows a basic Ethernet PLC-5 programmable controller system.

AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(12\)

For more information, see the Enhanced and Ethernet PLC-5 Programmable Controllers User Manual, publication 1785-UM012.

WARNING

  • If you connect or disconnect any communications cable with power applied to this module or any device on the network, an electrical arc can occur. This could cause an explosion in hazardous location installations.
  • Be sure that power is removed or the area is nonhazardous before proceeding.
  • The local programming terminal port (circular mini-DIN style programming terminal connection) is intended for temporary use only and must not be connected or disconnected unless the area is assured to be non-hazardous.

Prepare to Install the Controller
Installing the controller is one part of setting up the hardware in your system.

To properly install the controller, you must follow these procedures in the order described in this section.

  1. Install an I/O Chassis.
  2. Configure the I/O Chassis.
  3. Install the Power Supply.
  4. Install the PLC-5 Programmable Controller.
  5. Apply Power to the System.
  6. Connect the Personal Computer to the PLC-5 Programmable Controller.

Install an I/O Chassis
Install an I/O chassis according to the Universal I/O Chassis Installation Instructions, publication 1771-IN075.

Configure the I/O Chassis
Configure the I/O chassis by following this procedure.

  1. Set the backplane switches.AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(13\)
  2. Regardless of this switch setting, outputs are turned off when any of the following occurs:
    • controller detects a runtime error
    • an I/O chassis backplane fault occurs
    • you select the program or test mode
    • you set a status file bit to reset a local rack
    1. If an EEPROM module is not installed and controller memory is valid, the controller’s PROC LED indicator blinks, and the processor sets S:11/9, bit 9 in the major fault status word. To clear this fault, change the controller from program mode to run mode and back to program mode.
    2. If the controller’s keyswitch is set in REMote, the controller enters remote RUN after it powers up and has its memory updated by the EEPROM module.
    3. A processor fault (solid red PROC LED) occurs if processor memory is not valid.
    4. You cannot clear processor memory when this switch is on.
  3. Set the power-supply configuration jumper and set the keying bands as shown below.AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(14\)

Install the Power Supply
Install a power supply according to one of the following corresponding installation instructions.

Install This Power Supply According to this Publication

1771-P4S

1771-P6S

1771-P4S1

1771-P6S1

| Power Supply Modules Installation Instructions, publication 1771-2.135
1771-P7| Power Supply Module Installation Instructions, publication 1771-IN056

Install the PLC-5 Programmable Controller
The controller is a modular component of the 1771 I/O system requiring a properly installed system chassis. Refer to publication 1771-IN075 for detailed information on acceptable chassis along with proper installation and grounding requirements. Limit the maximum adjacent slot power dissipation to 10 W.

  1. Define the DH+ Station Address of Channel 1A by setting switch assembly SW-1 on the back of the controller. See the side of the controller for a listing of DH+ switch settings.

  2. Specify the Channel 0 port configuration. See the side of the controller for a listing of Channel 0 switch settings.

  3. To install the battery, attach the battery-side connector to the controller-side connector inside the battery compartment of the controller.AB-1785-L20E,-Ether-Net-IP-Controller-Fig- \(17\)
    WARNING
    When you connect or disconnect the battery, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before proceeding. For safety information on the handling of lithium batteries, including handling and disposal of leaking batteries, see Guidelines for Handling Lithium Batteries, publication AG-5.4.

  4. Install the controller.

For more information, see the Enhanced and Ethernet PLC-5 Programmable Controllers User Manual, publication 1785-UM012.

Apply Power to the System
When you apply power to a new controller, it is normal for the programming software to indicate a RAM fault.

See the following table to proceed. If the PROC LED is not off, turn to the next page for troubleshooting information.

If Your Keyswitch is in This Position Do This
PROGRAM Clear memory. The PROC LED should turn off. The software is in

Program mode.
REMOTE| Clear memory. The PROC LED should turn off. The software is in Remote Program mode.
RUN| You see the message No access or privilege violation because you cannot clear memory in Run mode. Change the keyswitch position to Program or Remote and press Enter to clear memory.

To monitor your system as you configure and run it, check the controller’s indicators:

This Indicator Lights When
COMM You establish serial communication (CH 0)
BATT No battery is installed or the battery voltage is low
FORCE Forces are present in your ladder program

If your controller is operating correctly, the:

  • Ethernet STAT indicator remains solid green
  • Ethernet Transmit indicators (100 M and 10 M) briefly light green when transmitting packets

If the indicators do not indicate the above normal operation, refer to the following table to troubleshoot the Ethernet indicators.

Connect the Personal Computer to the PLC-5 Programmable Controller
For more information, see:

  • Enhanced and Ethernet PLC-5 Programmable Controllers User Manual, publication 1785-UM012
  • the documentation provided with your communication card
  • Data Highway/Data Highway Plus/Data Highway II/Data Highway 485 Cable Installation Manual, publication 1770-6.2.2

Troubleshoot the Controller

Use the controller’s status indicators with the following tables for diagnostics and troubleshooting.

Indicator

| Color| Description| Probable Cause|

Recommended Action

---|---|---|---|---
BATT| Red| Battery low| Battery low| Replace battery within 10 days
Off| Battery is good| Normal operation| No action required
PROC| Green (steady)| The processor is in Run mode and fully operational| Normal operation| No action required
ATT| Green (blinking)| Processor memory is being transferred to EEPROM| Normal operation| No action required
OC

RCE

| Red (blinking)| Major fault| RSLogix 5 download in progress| During the RSLogix 5 download, this is a normal operation – wait for the download to complete.
OMM| | | Run-time error| If not during RSLogix 5 download:
| | | | Check the major fault bit in the status file (S:11) for error definition
| | | | Clear fault, correct problem, and return to Run mode
| Alternating Red and Green| Processor in FLASH-memory

Programming mode

| Normal operation if the processor’s FLASH memory is being reprogrammed| No action required – allow flash update to complete

| Indicator| Color| Description| Probable Cause| Recommended Action|
---|---|---|---|---|---|---
PROC| Red (steady)| Fault with memory loss| New controller

The processor has failed internal diagnostics

Power cycle with a battery problem.

| Use programming software to clear and initialize memory

Install the battery (to preserve failure diagnostics), then power down, reseat the controller, and cycle power; then reload your program. If you are unable to reload your program, replace the controller.

If you can reload your program and the fault persists, contact Technical Support at 440.646.3223 to diagnose the problem.

Properly replace or install the battery.

|
BATT PROC FORCE COMM| |
|
| | Off| Processor is in program load or Test mode or is not receiving power| Power supply or connections| Check the power supply and connections|
| FORCE| Amber| SFC and/or I/O forces

enabled

| Normal operation| No action required|
| | (steady)| | | |
| | Amber (blinking)| SFC and/or I/O forces present but not enabled| | |
| | Off| SFC and/or I/O forces not present| | |
| COMM| Off| No transmission on channel 0| Normal operation if the channel is not being used| No action required|
| | Green (blinking)| Transmission on Channel 0| Normal operation if the channel is being used| |

Troubleshoot the Controller Communication Channels

Indicator| Color| Channel Mode| Description| Probable Cause| Recommended Action
---|---|---|---|---|---
A or B| Green (steady)| Remote I/O Scanner| Active Remote I/O link, all adapter modules are present and not faulted| Normal operation| No action required
| | Remote I/O Adapter| Communicating with scanner| |
| | DH+| The controller is transmitting or receiving on the DH+ link| |
| |
Green (blinking rapidly or slowly)| Remote I/O Scanner| At least one adapter is faulted or has failed| Power off at the remote rack

Cable broken

| Restore power to the rack

Repair cable

| DH+| No other nodes on the network| |
| Red (steady)| Remote I/O Scanner Remote I/O Adapter DH+| Hardware fault| Hardware error| Turn power off, then on.


Check that the software configurations match the hardware set-up.


Replace the controller.

| Red (blinking rapidly or slowly)| Remote I/O Scanner| Faulted adapters detected| Cable not connected or is broken


Power off at remote racks

| Repair cable



Restore power to racks

| | DH+| Bad communication on DH+| Duplicate node detected| Correct station address
| Off| Remote I/O Scanner Remote I/O Adapter DH+| Channel offline| The channel is not being used| Place the channel online if needed

Troubleshoot the Ethernet Status Indicators

Indicator

| Color| Description| Probable Cause|

Recommended Action

---|---|---|---|---
STAT

| Solid red| Critical hardware fault| The controller requires internal repair| Contact your local Allen-Bradley distributor
Blinking red| Hardware or software fault (detected and reported via a code)| Fault-code dependent| Contact Technical Support at 440.646.3223 to

diagnose the problem.

Off| The module is functioning properly but it is not attached to an active Ethernet network| Normal operation| Attach the controller and interface module to an active Ethernet network
Solid Green| Ethernet channel 2 is functioning properly and has detected that it is connected to an active Ethernet network| Normal operation| No action required
100 M or

10 M

| Green| Lights (green) briefly when the Ethernet port is transmitting a packet. It does not indicate whether or not the Ethernet port is receiving a packet.| |

Controller Specifications

Operating Temperature| IEC 60068-2-1 (Test Ad, Operating Cold),

IEC 60068-2-2 (Test Bd, Operating Dry Heat),

IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 0…60 oC (32…140 oF)

---|---
Nonoperating Temperature| IEC 60068-2-1 (Test Ab, Un-packaged Nonoperating Cold),

IEC 60068-2-2 (Test Bc, Un-packaged Nonoperating Dry Heat),

IEC 60068-2-14 (Test Na, Un-packaged Nonoperating Thermal Shock):

–40…85 oC (–40…185 oF)

Relative Humidity| IEC 60068-2-30 (Test Db, Un-packaged Nonoperating Damp Heat):

5…95% Noncondensing

Vibration| IEC 60068-2-6 (Test Fc, Operating): 2 g @ 10…500Hz
Operating Shock| IEC 60068-2-27:1987, (Test Ea, Unpackaged shock): 30 g
Nonoperating Shock| IEC 60068-2-27:1987, (Test Ea, Unpackaged shock): 50 g
Emissions| CISPR 11:

Group 1, Class A (with appropriate enclosure)

ESD Immunity| IEC 61000-4-2:

6 kV indirect contact discharges

Radiated RF Immunity| IEC 61000-4-3:

10 V/m with 1 kHz sine-wave 80% AM from 30…2000 MHz

10 V/m with 200 Hz Pulse 50% AM from 100% AM at 900 MHz

10 V/m with 200 Hz Pulse 50% AM from 100% AM at 1890 MHz 1V/m with 1 kHz sine- wave 80%AM from 2000…2700 MHz

EFT/B Immunity| IEC 61000-4-4:

+ 2 kV at 5 kHz on communications ports

Surge Transient Immunity| IEC 61000-4-5:

+ 2 kV line-earth (CM) on communications ports

Conducted RF Immunity| IEC 61000-4-6:

10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz

Enclosure Type Rating| None (open style)
Power Consumption| 3.6 A @5V dc max
Power Dissipation| 18.9 W max
Isolation

(continuous voltage rating)

| 50V Basic Insulation between communication ports and between communication ports and backplane

Tested to withstand 500V rms for 60 s

Wire Size| Ethernet: 802.3 compliant shielded or unshielded twisted pair Remote I/O: 1770-CD cable

Serial Ports: Belden 8342 or equivalent

Wiring Category(1)| 2 – on communications ports
Replacement Battery| 1770-XYC
North American Temp Code| T4A
Specifications continued on the next page

  1. Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.

Time-of-day Clock/Calendar(1)| Maximum Variations at 60× C:  ± 5 min per month

Typical Variations at 20× C:   ± 20 s per month Timing Accuracy: 1 program scan

---|---
Available Cartridges| 1785-RC Relay Cartridge
Memory Modules| •  1785-ME16

•  1785-ME32

•  1785-ME64

•  1785-M100

I/O Modules| Bulletin 1771 I/O, 1794 I/O, 1746 I/O, and 1791 I/O including 8-, 16-, 32-pt, and intelligent modules
Hardware Addressing| 2-slot

•  Any mix of 8-pt modules

•  16-pt modules must be I/O pairs

•  No 32-pt modules 1-slot

•  Any mix of 8- or 16-pt modules

•  32-pt modules must be I/O pairs

1/2-slot—Any mix of 8-,16-, or 32-pt modules

Location| 1771-A1B, -A2B, -A3B, -A3B1, -A4B chassis; leftmost slot
Weight| 3 lb, 1 oz (1.39 kg)
Certifications(2)

(when the product is marked)

| UL         UL Listed Industrial Control Equipment. See UL File E65584.

CSA        CSA Certified Process Control Equipment. See CSA File LR54689C.

CSA        CSA Certified Process Control Equipment for Class I, Division 2 Group A, B, C, D Hazardous Locations. See CSA File LR69960C.

CE         European Union 2004/108/EC EMC Directive, compliant with EN 50082-2; Industrial Immunity

EN 61326; Meas./Control/Lab.,Industrial Requirements EN 61000-6-2; Industrial Immunity

EN 61000-6-4; Industrial Emissions

C-Tick     Australian Radiocommunications Act, compliant with:

AS/NZS CISPR 11; Industrial Emissions EtherNet/IP ODVA conformance tested to EtherNet/IP specifications

  1. The clock/calendar will update appropriately each year.
  2. See the Product Certification link at www.ab.com for Declarations of Conformity, Certificates, and other certification details.

Battery Type
Ethernet PLC-5 programmable controllers use 1770-XYC batteries that contain 0.65 grams of lithium.

Average Battery Lifetime Specifications

Worst-case Battery Life Estimates

In This Controller:| At This Temperature| Power Off 100%| Power Off 50%| Battery Duration After The LED lights (1)
PLC-5/20E, -5/40E,

-5/80E

| 60 °C| 84 days| 150 days| 5 days
25 °C| 1 year| 1.2 years| 30 days

The battery indicator (BATT) warns you when the battery is low. These durations are based on the battery supplying the only power to the controller (power to the chassis is off) once the LED first lights.

Memory and Channel Specifications
This table lists the memory and channel specifications of each Ethernet PLC-5 programmable controller.

Cat. No.| Max User Memory (words)| Total I/O Max| Channels| Max Number of I/O Chassis| | Power Dissipation, Max| Backplane Current Load
---|---|---|---|---|---|---|---
| | | Total| Extended

-Local

| Remote| ControlNet
1785-L20E| 16 k| 512 any mix or 512 in + 512 out (compliment)| 1 Ethernet

1 DH+

1 DH+/remote I/O

| 13| 0| 12| 0| 19 W| 3.6 A
1785-L40E| 48 k| 2048 any mix or 2048 in + 2048 out (compliment)| 1 Ethernet

2 DH+/remote I/O

| 61| 0| 60| 0| 19 W| 3.6 A
1785-L80E| 100 k| 3072 any mix or 3072 in + 3072 out (compliment)| 1 Ethernet

2 DH+/remote I/O

| 65| 0| 64| 0| 19 W| 3.6 A

Allen-Bradley, Data Highway, Data Highway II, DH+, PLC-5, and RSLogix 5 are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.

Rockwell Automation Support

Rockwell Automation provides technical information on the web to assist you in using our products. At http://support.rockwellautomation.com, you can find technical manuals, a knowledge base of FAQs, technical and application notes, sample code and links to software service packs, and a MySupport feature that you can customize to make the best use of these tools.

For an additional level of technical phone support for installation, configuration, and troubleshooting, we offer TechConnect Support programs. For more information, contact your local distributor or Rockwell Automation representative, or visit http://support.rockwellautomation.com.

Installation Assistance
If you experience a problem with a hardware module within the first 24 hours of installation, please review the information that’s contained in this manual. You can also contact a special Customer Support number for initial help in getting your module up and running:

United States| 1.440.646.3223

Monday – Friday, 8 am – 5 pm EST

---|---
Outside the United States| Please contact your local Rockwell Automation representative for any technical support issues.

New Product Satisfaction Return
Rockwell tests all of our products to ensure that they are fully operational when shipped from the manufacturing facility. However, if your product is not functioning and needs to be returned:

United States| Contact your distributor. You must provide a Customer Support case number (see phone number above to obtain one) to your distributor to complete the return process.
---|---
Outside the United States| Please contact your local Rockwell Automation representative for the return procedure.

www.rockwellautomation.com

Power, Control, and Information Solutions Headquarters

  • Americas: Rockwell Automation, 1201 South Second Street, Milwaukee, WI 53204-2496 USA, Tel: (1) 414.382.2000, Fax: (1) 414.382.4444
  • Europe/Middle East/Africa: Rockwell Automation, Vorstlaan/Boulevard du Souverain 36, 1170 Brussels, Belgium, Tel: (32) 2 663 0600, Fax: (32) 2 663 0640
  • Asia Pacific: Rockwell Automation, Level 14, Core F, Cyberport 3, 100 Cyberport Road, Hong Kong, Tel: (852) 2887 4788, Fax: (852) 2508 1846

Copyright © 2006 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.

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