Rockwell Automation Allen-Bradley 1734-232ASC Bedienungsanleitung

POINT I/O ASCII Modules

Catalog Numbers 1734-232ASC, 1734-485ASC, 1734-485ASCK

User Manual Original Instructions

2Rockwell Automation Publication 1734-UM009C-EN-P - August 2022

POINT I/O ASCII Modules User Manual

Important User Information

Read this document and the documents listed in the additional resources section about installation, configuration, and

operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize

themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.

Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to

be carried out by suitably trained personnel in accordance with applicable code of practice.

If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be

impaired.

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. with respect 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, when necessary, we use notes to make you aware of safety considerations.

Labels may also be on or inside the equipment to provide specific precautions.

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.

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, and recognize the consequence.

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

SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous

voltage may be present.

BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may

reach dangerous temperatures.

ARC FLASH HAZARD: Labels may be on or inside the equipment, for example, a motor control center, to alert people to potential

Arc Flash. Arc Flash will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL Regulatory

requirements for safe work practices and for Personal Protective Equipment (PPE).

Rockwell Automation Publication 1734-UM009C-EN-P - August 2022 3

Table of Contents

Preface

About This Publication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Download Firmware, Add-on Profile, EDS, and Other Files. . . . . . . . . . . 5

Summary of Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 1

Overview of the POINT I/O

ASCII Modules

General Information on the ASCII Modules . . . . . . . . . . . . . . . . . . . . . . . . 7

Cable Pinouts for Standard DB Connectors. . . . . . . . . . . . . . . . . . . . . . . . . 8

Install a Serial Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Read Serial Device Input Data from the ASCII Module. . . . . . . . . . . . . . . 8

Write Serial Output Data to the ASCII Module . . . . . . . . . . . . . . . . . . . . . . 9

Configure ASCII Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Requested Packet Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Listen Only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Operating Mode Selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Transmit Handshake and Transmit Immediate Option. . . . . . . . . . 11

Produce Immediate and Master/Slave Handshake Option . . . . . . . 12

Pad and No Pad Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Module Inhibiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Electronic Keying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 2

Configure the ASCII Module Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Create a New Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Edit the Module Configuration Categories . . . . . . . . . . . . . . . . . . . . . . . . 17

General Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Connection Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Module Info Category. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Configuration Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Advance Format Configuration Category . . . . . . . . . . . . . . . . . . . . . . 20

View the Module Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Chapter 3

Module Tag Definitions Tag Name Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Access the Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Configuration Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

POINT I/O Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Receive Serial Data from the ASCII Device . . . . . . . . . . . . . . . . . . . . . . . . 27

Set Up the Receive Character Buffer Length . . . . . . . . . . . . . . . . . . . . 27

Set Up and Use Pad Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Set Up and Use the Swap Bytes Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Set Up and Use Delimiter Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4Rockwell Automation Publication 1734-UM009C-EN-P - August 2022

Table of Contents

Receive String Data Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Status Byte Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Transmit Serial Data to the ASCII Device. . . . . . . . . . . . . . . . . . . . . . . . . . 30

Set Up the Transmit Character Buffer Length . . . . . . . . . . . . . . . . . . 31

Set Up and Use the Transmit Delimiter . . . . . . . . . . . . . . . . . . . . . . . . 31

Transmit String Data Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Transmit Handshake or Transmit Immediate Mode . . . . . . . . . . . . 32

Transmit Serial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Produce Immediate or Master/Slave Handshake Mode . . . . . . . . . . 33

Chapter 4

Diagnostics Interpret Status Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Appendix A

ASCII Module with ControlLogix

System Application Examples

About These Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Serial Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Send Data Through the ASCII Modules . . . . . . . . . . . . . . . . . . . . . . . . 37

Receive Data From the ASCII Modules. . . . . . . . . . . . . . . . . . . . . . . . . 38

Read Data from the ASCII Modules into ControlLogix . . . . . . . . . . 38

Transmit Data from ControlLogix Through the ASCII Modules . . 39

Index

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Rockwell Automation Publication 1734-UM009C-EN-P - August 2022 5

Preface

About This Publication Read this preface to familiarize yourself with the rest of the manual. It

provides information concerning:

• Who should use this manual

• The purpose of this manual

• Related documentation

Rockwell Automation recognizes that some of the terms that are currently

used in our industry and in this publication are not in alignment with the

movement toward inclusive language in technology. We are proactively

collaborating with industry peers to find alternatives to such terms and

making changes to our products and content. Please excuse the use of such

terms in our content while we implement these changes.

Purpose of this Manual This manual describes how to use your POINT I/O™ 1734-232ASC serial

interface module (for the RS-232 network) or 1734-485ASC and 1734-485ASCK

modules (for the RS-485 or RS-422 network) in Logix 5000® control systems.

Make sure that you are familiar with the following:

• Use of a controller in a Logix 5000 control system

• Use of an EtherNet/IP™ network, if the POINT I/O modules are

installed in a remote location from the controller that is accessible via

the EtherNet/IP network

• Studio 5000 Logix Designer® application environment

Download Firmware, Add-on

Profile, EDS, and Other Files

Download firmware, associated files (such as Add-on Profile, EDS, and DTM),

and access product release notes from the Product Compatibility and

Download Center at rok.auto/pcdc.

Summary of Changes This publication contains the following new or updated information. This list

includes substantive updates only and is not intended to reflect all changes.

IMPORTANT Remember the following when you use POINT I/O module:

• You can use POINT I/O modules directly with CompactLogix™ 5370

controllers. However, for all other CompactLogix and ControlLogix®

controllers you need to use a POINT I/O adapter.

• You must use the Studio 5000 Logix Designer application, version 17 or

later, to configure POINT I/O modules.

Topic Page

Updated template throughout

Changed from DeviceNet® to EtherNet/IP throughout

Added inclusive language acknowledgment 5

Removed the installation section 8

Updated configuration chapter with EtherNet/IP network and Studio 5000 Logix Designer 15

Added a module tag definition chapter 23

Removed the specifications appendix 37

6Rockwell Automation Publication 1734-UM009C-EN-P - August 2022

Preface

Additional Resources These documents contain additional information concerning related products

from Rockwell Automation.

You can view or download publications at rok.auto/literature.

Resource Description

POINT I/O RS-232 and RS-485 ASCII Modules Installation Instructions,

publication 1734-IN588 Describes how to install and wire the POINT I/O ASCII modules.

POINT I/O Selection Guide, publication 1734-SG001 Provides specifications for the entire POINT I/O family of products.

System Security Design Guidelines Reference Manual, publication SECURE-RM001 Provides guidance on how to conduct security assessments, implement Rockwell Automation

products in a secure system, harden the control system, manage user access, and dispose of

equipment.

EtherNet/IP Network Configuration User Manual, publication ENET-UM006 Describes how to configure and use EtherNet/IP devices to communicate on the EtherNet/IP

network.

Ethernet Reference Manual, publication ENET-RM002 Describes basic Ethernet concepts, infrastructure components, and infrastructure features.

Industrial Components Preventive Maintenance, Enclosures, and Contact Ratings

Specifications, publication IC-TD002 Provides a quick reference tool for Allen-Bradley® industrial automation controls and

assemblies.

Safety Guidelines for the Application, Installation, and Maintenance of Solid-state

Control, publication SGI-1.1

Designed to harmonize with NEMA Standards Publication No. ICS 1.1-1987 and provides general

guidelines for the application, installation, and maintenance of solid-state control in the form of

individual devices or packaged assemblies incorporating solid-state components.

Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1 Provides general guidelines for installing a Rockwell Automation industrial system.

Product Certifications website, rok.auto/certifications Provides declarations of conformity, certificates, and other certification details.

Rockwell Automation Publication 1734-UM009C-EN-P - August 2022 7

Chapter 1

Overview of the POINT I/O ASCII Modules

General Information on

the ASCII Modules

The POINT I/O ASCII modules provide a flexible EtherNet/IP interface to a

wide variety of RS-232, RS-485, and RS-422 ASCII devices. The modules

provide the communication connections to the ASCII device.

The 1734-232ASC module connects to the RS-232 network while the

1734-485ASC module connects to the RS-485 or RS-422 network.

POINT I/O RS-232 and RS-485 ASCII Modules

Topic Page

General Information on the ASCII Modules 7

Cable Pinouts for Standard DB Connectors 8

Install a Serial Network 8

Read Serial Device Input Data from the ASCII Module 8

Write Serial Output Data to the ASCII Module 9

Configure ASCII Modules 9

Listen Only Mode 11

Operating Mode Selections 11

Module Inhibiting 12

Electronic Keying 13

Component Description

Description Description

1 Module locking mechanism 6 Interlocking side pieces

Module

Status

Network

Status

1734

232ASC

NODE:

8Rockwell Automation Publication 1734-UM009C-EN-P - August 2022

Chapter 1 Overview of the POINT I/O ASCII Modules

Cable Pinouts for

Standard DB Connectors

Table 1 shows how to connect cable pinouts for standard DB connectors.

Install a Serial Network The communication between your serial devices and the:

• 1734-232ASC is an RS-232 3-wire network.

• 1734-485ASC is an RS-485 2-wire network or RS-422 4-wire network.

1. Connect an appropriate cable to your device.

2. Connect the other end of the cable to the ASCII module using the

designated positions on the 1734-TB terminal block.

Notice the terminal markings on the ASCII module case.

3. Turn on power to the serial device and the ASCII module.

4. Configure the ASCII buffer sizes on the ASCII module.

The defaults are 20 and 20. If more than 20 bytes are required for the transmit

or receive buffers, set the appropriate parameters. See Read Data from the

ASCII Modules into ControlLogix on page 38 and Transmit Data from

ControlLogix Through the ASCII Modules on page 39.

Read Serial Device Input

Data from the ASCII Module

1. Add the ASCII module to a Studio 5000 Logix Designer application

project, see Create a New Module on page 15.

2. Connect the serial side of the ASCII module to your computer’s serial

port or another serial device.

3. From the Module Information dialog box, check the module information.

4. Make sure that the ASCII module is in the default factory configuration.

5. Set the communication rate and framing format of the serial port to the

communication rate and framing format of the serial device that you are

using.

6. Put the controller in Run mode.

7. Direct the device that you are communicating with to send data.

You can see the data sent from the device in the controller tag. See Read

Data from the ASCII Modules into ControlLogix on page 38.

The default assembly of the poll response message is shown in Table 2.

2 Slide-in writable Label 7 DIN rail locking screw (orange)

3 RTB removing handle 8 Mechanical keying (orange)

4 Removable Terminal Block (RTB) 9 Module wiring diagram

5 Mounting base 10 Insertable I/O module

Component Description (Continued)

Description Description

Table 1 - ASCII Functions

Pin Number

Function DB-25 DB-9

Transmit Data (TXD) 2 3

Receive Data (RXD) 3 2

Signal Ground (SG) 7 5

Rockwell Automation Publication 1734-UM009C-EN-P - August 2022 9

Chapter 1 Overview of the POINT I/O ASCII Modules

Write Serial Output Data to

the ASCII Module

1. Add the ASCII module to a Studio 5000 Logix Designer application

project, see Create a New Module on page 15.

2. Connect the serial side of the ASCII module to your computer’s serial

port or another serial device.

3. From the Module Information dialog box, check the module information.

4. Make sure that the ASCII module is in the default factory configuration.

5. Set the communication rate and framing format of the serial port to the

communication rate and framing format of the serial device that you are

using.

6. Enter the serial data that you wish to send in the transmit data controller

tag.

7. Enter the length of the data in the length byte to reflect the length you

wish to send and press Enter.

8. Set the transmit record number from the controller tag, and apply.

The ASCII module transmits the characters that you entered in the

controller tag to the connected serial device.

Configure ASCII Modules You must create a Studio 5000 Logix Designer application project for the

Logix 5000 controller that owns the ASCII module. The project includes

module configuration data for the ASCII module.

The Studio 5000 Logix Designer application transfers the project to the owner-

controller during the program download. Data is then transferred to the ASCII

module over the EtherNet/IP network.

ASCII modules can operate immediately after receiving the configuration data

Connections

During module configuration, you must define the module. Among the

Module Definition parameters, you must choose a connection type for the

module. A connection is a real-time data transfer link between the owner-

controller and the module that occupies the slot that the configuration

references.

When you download module configuration to a controller, the controller

attempts to establish a connection to each module in the configuration.

Because part of module configuration includes a slot in the POINT I/O system,

the owner-controller checks for the presence of a module there. If a module is

Table 2 - Default Receive Data Assembly Format (Default Mode)

Byte 1 Byte 2 Byte 3 Byte 4 Byte 5…23 Byte 24

Receive Record Number Status Byte Reserved Length ASCII Data <CR> (Terminator)

Table 3 - Default Transmit Data Assembly Format (Default Mode)

Byte 1 Byte 2 Byte 3 Byte 4 Byte 5…23 Byte 24

Reserved Transmit Record Number Reserved Length ASCII Data <CR> (Terminator)

10 Rockwell Automation Publication 1734-UM009C-EN-P - August 2022

Chapter 1 Overview of the POINT I/O ASCII Modules

detected, the owner-controller sends the configuration. One of the following

occurs:

• If the configuration is appropriate to the module detected, a connection

is made and operation begins.

• If the configuration is not appropriate to the module detected, the data is

rejected and the Studio 5000 Logix Designer application indicates that

an error occurred.

The configuration can be inappropriate for many reasons. For example, a

mismatch in electronic keying that helps prevents normal operation.

The owner-controller monitors its connection with a module. Any break in the

connection, for example, the loss of power to the backplane, causes a fault. The

Studio 5000 Logix Designer application monitors the fault status tags to

indicate when a fault occurs on a module.

Connection Types Available with POINT I/O ASCII Modules

When configuring an ASCII module, you must define the module. Connection

is a required parameter in the Module Definition. The choice determines what

data is exchanged between the owner-controller and the module.

Table 4 describes the connection types that you can use with an ASCII module.

For more information on the connection choices available with ASCII module,

see the Studio 5000 Logix Designer application.

Requested Packet Interval

The Requested Packet Interval (RPI) is a configurable parameter that defines a

specific rate at which data is exchanged between the owner-controller and the

module.

You set the RPI value during initial module configuration and can adjust it as

necessary after module operation has begun. Valid RPI values are 2…750 ms.

Table 4 - Connections - POINT I/O ASCII Modules

Connection Type Description

Data The module returns the following to the owner-controller:

• General fault data

• Input data

Listen Only When a Listen Only data connection is used, another controller owns the module.

A controller that makes a Listen Only connection to the module does not write configuration

for the module. It merely listens to the data exchanged with the owner-controller.

IMPORTANT If you change the RPI while the project is online, the connection to the

module is closed and reopened in one of the following ways:

• You inhibit the connection to the module, change the RPI value, and uninhibit

the connection.

• You change the RPI value. In this case, the connection is closed and

reopened immediately after you apply the change to the module

configuration.

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