Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 103)

Chapter
9
9-1
Start-up and Troubleshooting
This chapter outlines an approach to start-up and troubleshooting
procedures. Necessarily, exact procedures that would be followed vary
from one application to the next. However, these guidelines provide a
useful starting point when initiating a Data Highway installation or when
trying to locate a fault condition.
The methods described in this chapter can be used to test any station that
contains a Bulletin 1772 programmable controller and a 1771-KA2
communication adapter module. Methods for start-up and
troubleshooting of other processors are described in other manuals.
When using a computer connected through a 1771-KE, -KF
communication controller module, additional procedures are available for
start-up and troubleshooting. Among these added capabilities, a set of
diagnostic commands is available. Use of these commands to test module
interaction is described in the User’s Manual, Communication Controller
Module, publication 1771-6.5.15. Even where a computer is connected to
the Data Highway, however, it is recommended that the procedures in this
chapter to follow the initial testing of the station. Once each station with
a programmable controller has been tested, operation of computer
interfacing can then be checked.
This section describes the tools available to start-up and troubleshoot the
system. These aids are provided by the module itself, by programming
terminals, and by careful documentation provided by the programmer of
the station processor.
Module Indicators
Module diagnostic indicators show the status of module operation with its
station processor and with the Data Highway. This section describes these
indicators and their significance in start-up and troubleshooting.
Figure 9.1 shows the significance of various combinations of energized
indicators. Three green indicators show module status in normal message
transfer. Two red indicators show the status of module tests of the
program and module communication with its station processor.
General
Start-up and Troubleshooting
Aids