GE 90-30 PLC Switch User Manual

This chapter is a guide to troubleshooting and problem isolation for the Series 90-30
TCP/IP Ethernet Interface. This chapter includes the sections listed below:
Diagnostic Tools Available for Troubleshooting
What to do if you Cannot Solve the Problem
The PLC Fault Table
Diagnostic Tools Available for Troubleshooting
There are several tools to assist you in diagnosing problems with the Series 90-30
Ethernet Interface and the network.
Use the Ethernet Interface LEDs to troubleshoot a problem on power-up of the
Ethernet Interface and for an immediate visual summary of the operational state of
the Interface. Refer to Chapter 2, Installation, for more information.
Use the Series 90-30 PLC Fault Table to troubleshoot a problem once the Interface is
running. It provides a record of exceptions logged by the PLC, the Ethernet Interface,
and other Series 90-30 modules. The PLC Fault Table may be accessed through the
Logicmaster 90-30 Configurator or Programmer software or CIMPLICITY Control.
Refer to the Series 90-30 Programmable Controllers Reference Manual, GFK-0467, for more
information. Look in the PLC Fault Table for a logged fault, then refer to the PLC Fault
Table section in this chapter for instructions on what action to take.
Use the Status Data to troubleshoot ladder programs containing COMMREQ
functions that initiate communications. The status data consists primarily of the
Status bits and the Communications Status words. Refer to Chapter 3, Programming
Communications Requests, for more information.
Use the Station Manager software to troubleshoot a problem with the Interface, with
the network, with PLC backplane communication, or with your application. The
LOG, TALLY, EXS, and STAT Station Manager commands are especially useful.
The LOG command provides a complete record of exceptions occurring with the
network and Interface.
The TALLY command provides statistics about operation and performance of
the network and Interface.
The EXS command provides information about COMMREQs.
The STAT command provides the current status on the operation of the Interface.
Refer to GFK-1186, TCP/IP Ethernet Communications Station Manager Manual, for
information on how to access and use the Station Manager software.