Rockwell Automation 1734-485ASC POINT I/O ASCII User Manual User Manual
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Publication 1734-UM009B-EN-P - July 2003
Table of Contents
General Information on the ASCII Modules . . . . . . . . . . . . 1-1
Installing the Mounting Base/ Wiring Base Assembly . . . . . 1-1
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
Wiring the 1734-485ASC Module . . . . . . . . . . . . . . . . . . . . 1-6
Cable Pinouts for Standard DB Connectors. . . . . . . . . . . . . 1-8
How to Install a Serial Network . . . . . . . . . . . . . . . . . . . . . 1-8
How to Read Serial Device Input Data from the ASCII Module .
1-9
How to Write Serial Output Data to the ASCII Module . . . . 1-10
Setting Up DeviceNet Communications . . . . . . . . . . . . . . . 1-11
Polled I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Cyclic and Change of State I/O. . . . . . . . . . . . . . . . . . . 1-12
Setting Up the DeviceNet I/O Connections . . . . . . . . . . 1-12
Setting Up the Connection Timer (EPR) . . . . . . . . . . . . 1-13
Operating Mode Selections . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Transmit Handshake vs. Transmit Immediate Option . . . 1-14
Produce Immediate vs. Master/Slave Handshake Option 1-15
Pad vs. No Pad Option. . . . . . . . . . . . . . . . . . . . . . . . . 1-15
About Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Adding the ASCII Modules to Your Network . . . . . . . . . 2-4
Adding I/O Modules to Your Network . . . . . . . . . . . . . 2-5
Setting the 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
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