Allen-Bradley POINT I/O 1734-232ASC User manual

POINT I/O RS-232
ASCII Module
1734-232ASC
User Manual
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Important User Information
Because of the variety of uses for the products described in this
publication, those responsible for the application and use of these
products must satisfy themselves that all necessary steps have been
taken to assure that each application and use meets all performance
and safety requirements, including any applicable laws, regulations,
codes and standards. In no event will Allen-Bradley be responsible or
liable for indirect or consequential damage resulting from the use or
application of these products.
Any illustrations, charts, sample programs, and layout examples
shown in this publication are intended solely for purposes of
example. Since there are many variables and requirements associated
with any particular installation, Allen-Bradley does not assume
responsibility or liability (to include intellectual property liability) for
actual use based upon the examples shown in this publication.
Allen-Bradley publication SGI-1.1, Safety Guidelines for the
Application, Installation and Maintenance of Solid-State Control
(available from your local Allen-Bradley office), describes some
important differences between solid-state equipment and
electromechanical devices that should be taken into consideration
when applying products such as those described in this publication.
Reproduction of the contents of this copyrighted publication, in whole
or part, without written permission of Rockwell Automation, is
prohibited.
Throughout this publication, notes may be used to make you aware of
safety considerations. The following annotations and their
accompanying statements help you to identify a potential hazard,
avoid a potential hazard, and recognize the consequences of a
potential hazard:
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.
IMPORTANT Identifies information that is critical for successful
application and understanding of the product.

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Support
Before you contact Rockwell Automation for technical assistance, we
suggest you please review the troubleshooting information contained
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1Publication 1734-UM009A-EN-P - June 2002
Preface
Purpose of This Manual
This manual describes how to install, configure, and troubleshoot
your POINT I/O RS-232 ASCII module.
Who Should Use
This Manual
You must be able to use RSNetWorx for DeviceNet software or similar
configuration software to set this module. You must have the
capability to download and use Electronic Data Sheet (EDS) files.
We assume you know how to do this in this manual. If you do not,
refer to your software user manuals or online help before attempting
to use this module.
For Information on See
Chapter/
Appendix
Installing the RS-232 ASCII Module 1
Configuring Your RS-232 ASCII Module 2
Diagnostics 3
Specifications A
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Publication 1734-UM009A-EN-P - June 2002
Preface 2
Related Products and
Documentation
The following table lists related POINT I/O products and
documentation.
Catalog Number Description Related Publications
Communication
Adapter
DeviceNet Adapter (Cat. No. 1734-ADN) Installation Instructions 1734-IN007
Communication
Interface
DeviceNet Interface (Cat. No. 1734-PDN) Installation Instructions 1734-IN057
1734D Series 1734D Series 24V dc 8 In/8 Out Combo Module (Cat. No. 1734D-IB8XOB8E,
-IB8XOB8ES)
Installation Instructions 1734-5.20
1734D Series 24V dc 8 In/8 N.O. Relay Combo Module (Cat. No.
1734D-IB8XOW8, -IB8XOW8S)
Installation Instructions 1734-5.21
1734D Series 120V ac 8 In/8 Out Combo Module (Cat. No. 1734D-IA8XOA8,
-IA8XOA8S)
Installation Instructions 1734-5.22
1734D Series 120V ac 8 In/8 N.O. Relay Combo Module (Cat. No.
1734D-IA8XOW8, -IA8XOW8S)
Installation Instructions 1734-5.23
Wiring Base
Assemblies
Wiring Base Assembly with 8 Screw-Clamp or Spring-Clamp Removable
Terminal Blocks (Cat Nos. 1734-TB, -TBS)
Installation Instructions 1734-IN511
Wiring Base Assembly with 12 Screw-Clamp or Spring-Clamp Removable
Terminal Blocks (Cat Nos. 1734-TB3, -TB3S)
Installation Instructions 1734-IN013
AC Modules 120V ac 2 Input Module (Cat. No. 1734-IA2) Installation Instructions 1734-IN010
120/220V ac 2 Output Module (Cat. No. 1734-OA2) Installation Instructions 1734-IN009
220V ac 2 Input Module (Cat. No. 1734-IM2) Installation Instructions 1734-IN008
DC Modules 24V dc 2 Input Sink Module (Cat. No. 1734-IB2) Installation Instructions 1734-IN051
24V dc 4 Input Sink Module (Cat. No. 1734-IB4) Installation Instructions 1734-IN051
24V dc 2 Input Source Module (Cat. No. 1734-IV2) Installation Instructions 1734-IN052
24V dc 4 Input Source Module (Cat. No. 1734-IV4) Installation Instructions 1734-IN052
24V dc Electronically Protected 2 Point Output Module (Cat. No.
1734-OB2E)
Installation Instructions 1734-IN056
24V dc Electronically Protected 4 Point Output Module (Cat. No. 1734-0B4E) Installation Instructions 1734-IN056
Analog Modules 24V dc Analog 2 Current Input Module (Cat. No. 1734-IE2C) Installation Instructions 1734-IN053
24Vdc Analog 2 Current Output Module (Cat. No. 1734-OE2C) Installation Instructions 1734-IN054
24V dc Analog 2 Voltage Input Module (Cat. No. 1734-IE2V) Installation Instructions 1734-IN001
24Vdc Analog 2 Voltage Output Module (Cat. No. 1734-OE2V) Installation Instructions 1734-IN002
RTD Module RTD Input Module (Cat. No. 1734-IR2) Installation Instructions 1734-IN012
Thermocouple
Module
Isolated Thermocouple Input Module (Cat. No. 1734-IT2I) Installation Instructions 1734-IN011

Publication 1734-UM009A-EN-P - June 2002
Preface 3
Counter Modules 24V Encoder/Counter Module (Cat. No. 1734-IK) Installation Instructions
User Manual
1734-IN006
1734-UM006
5V Encoder/Counter Module (Cat. No. 1734-IJ) Installation Instructions
User Manual
1734-IN005P
1734-UM006
24V dc Very High Speed Counter Module (Cat. No. 1734-VHSC24) Installation Instructions
User Manual
1734-IN003
1734-UM003
5V dc Very High Speed Counter Module (Cat. No. 1734-VHSC5) Installation Instructions
User Manual
1734-IN004
1734-UM003
Relay Module 24V dc, 120V ac, and 240V ac 2 Relay Sink/Source Output Module (Cat. No.
1734-OW2)
Installation Instructions 1734-IN055
Field Power
Distributor
Field Power Distributor (Cat. No. 1734-FPD) Installation Instructions 1734-IN059
Expansion Power
Supply
24V dc Expansion Power Supply (Cat. No. 1734-EP24DC) Installation Instructions 1734-IN058
Catalog Number Description Related Publications
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Publication 1734-UM009A-EN-P - June 2002
Preface 4
Notes:

iPublication 1734-UM009A-EN-P - June 2002
Table of Contents
Chapter 1
Installing the RS-232
ASCII Module
General Information on the 1734-232ASC Module. . . . . . . . 1-1
Installing the Mounting Base/ Wiring Base Assembly . . . . . 1-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Installing an I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Installing the Removable Terminal Block . . . . . . . . . . . . . . 1-4
Removing a Mounting Base . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Wiring the 1734-232ASC Module . . . . . . . . . . . . . . . . . . . . 1-6
Cable Pinouts for Standard DB Connectors. . . . . . . . . . . . . 1-7
How to Install a Serial Network . . . . . . . . . . . . . . . . . . . . . 1-7
How to Read Serial Device Input Data from
the 1734-232ASC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
How to Write Serial Output Data to the 1734-232ASC . . . . . 1-9
Setting Up DeviceNet Communications . . . . . . . . . . . . . . . 1-10
Polled I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Cyclic and Change of State I/O. . . . . . . . . . . . . . . . . . . 1-11
Setting Up the DeviceNet I/O Connections . . . . . . . . . . 1-11
Setting Up the Connection Timer (EPR) . . . . . . . . . . . . 1-12
Operating Mode Selections . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Transmit Handshake vs. Transmit Immediate Option. . . 1-13
Produce Immediate vs. Master/Slave Handshake Option 1-14
Pad vs. No Pad Option. . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Chapter 2
Configuring Your RS-232
ASCII Module
About Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Adding the RS-232 ASCII Module to Your Network . . . . 2-4
Adding I/O Modules to Your Network . . . . . . . . . . . . . 2-5
Setting the RS-232 ASCII Module’s Parameters . . . . . . . . . . 2-6
Checking I/O Status and Viewing the EDS File. . . . . . . . . . 2-8
Configuration Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Parameter List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
POINT I/O Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Receiving Serial Data from the ASCII Device . . . . . . . . . 2-15
Setting Up the Receive Character Buffer Length. . . . . . . 2-15
Setting Up and Using Pad Mode . . . . . . . . . . . . . . . . . . 2-16
Setting Up and Using the Swap Bytes Mode . . . . . . . . . 2-17
Setting Up and Using Delimiter Operation . . . . . . . . . . 2-18
Receive String Data Type . . . . . . . . . . . . . . . . . . . . . . . 2-18
Setting Up the Scanner I/O Receive Size . . . . . . . . . . . . 2-19
Explicit Messages to Receive the Serial Data String . . . . 2-20
Status Byte Description . . . . . . . . . . . . . . . . . . . . . . . . 2-20
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Publication 1734-UM009A-EN-P - June 2002
Table of Contents ii
Transmitting Serial Data to the ASCII Device . . . . . . . . . . . 2-21
Setting Up the Transmit Character Buffer Length . . . . . . 2-22
Setting Up and Using the Transmit Delimiter. . . . . . . . . 2-22
Transmit String Data Assemblies . . . . . . . . . . . . . . . . . . 2-23
Transmit Handshake vs. Transmit Immediate Mode . . . . 2-24
Transmitting Serial Data . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Setting Up the Scanner I/O Transmit Size . . . . . . . . . . . 2-26
Produce Immediate vs. Master/Slave Handshake Mode . 2-27
Explicit Messages to Transmit Serial Data String . . . . . . 2-28
Chapter 3
Diagnostics
Using the Indicators for Troubleshooting . . . . . . . . . . . . . . 3-1
Appendix A
Specifications
Specifications for the 1734-232ASC Module . . . . . . . . . . . . A-1
Appendix B
Using the 1734-232ASC Module
with the ControlLogix System
Application Examples
About These Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Serial Port Connector . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
EDS Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
DeviceNet Data Details . . . . . . . . . . . . . . . . . . . . . . . . B-3
Sending Data Through the 1734-232ASC Module. . . . . . B-3
Receiving Data From the 1734-232ASC Module . . . . . . . B-3
Reading Data from the 1734-232ASC Module into
ControlLogix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Transmitting Data from ControlLogix Through the
1734-232ASC Module . . . . . . . . . . . . . . . . . . . . . . . . . . B-6