Allen-Bradley POINT I/O 1734-232ASC

i Publication 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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