Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 114)

Start–up and Troubleshooting
Chapter 9
9-12
A ladder-diagram printout can be generated on a compatible data terminal,
such as a teletype or other line printer.
Forms for programmer documentation are described in chapter 10.
A careful start-up procedure is essential to proper Data Highway
operation. With a methodical start-up procedure, cabling connections,
module set-up and support programming for module communication can
be tested at each station.
Start-up of a newly-installed Data Highway requires the combined efforts
of maintenance personnel, the programmable controller programmer, and
in many cases, the computer programmer. Because applications may vary
widely, the recommendations in this section are general. Specific start-up
procedures will depend on the exact nature of the individual application.
For the procedures in this chapter, the following preparation is assumed:
Station assembled using compatible components, as described in
chapter 2.
Communication adapter module properly installed, as described in
chapter 3.
Programming at the station processor includes the communication zone
and the necessary support programming for initiating and monitoring
user commands, as described in chapters 5 and 7.
That your application program is fully tested.
The last point is very important. Testing your application program at
each station is essential for proper operation. This means that the
application program must be tested before the Data Highway is tested.
You must test the program that controls output devices, including those
parts of the program that use data transferred from other stations.
In a new installation, you must complete all start-up procedures of the
controller before attempting to test Data Highway operation. This
includes complete testing of I/O devices, I/O wiring and program
sequencing. Procedures for start-up of a new controller are covered in
other publications. A lists of these publications appears in chapter 1.
In many cases, Data Highway capability is added to an existing controller
installation. Here, the application program may be only slightly modified
to use data from other stations. However, any editing or change of the
program must be tested at the controller so that errors can be corrected
before the program is put into full operation.
Start-up Procedures