Unable To Communicate With I/O Module - GE Mark VIe System Manual

8.5 Unable to Communicate with I/O Module

In the ToolboxST application, Component Editor, Hardware tab, a red X symbol on an I/O module indicates that the
controller is unable to communicate with that I/O module. If multiple modules have red X symbols, the problem may be with
the IONet switch or the I/O module power supply.
➢ ➢ To view I/O communication failures between an I/O pack and the controller diagnostic
1. From the ToolboxST application, open the Mark VIe control .tcw file.
From the Component Editor, select the Hardware tab and right-click on the I/O pack with a red X.
2.
Select View Diagnostics.
3.
Note In TMR I/O modules, the diagnostic displays for the faulty module only.
Condition
Other I/O packs on same IONet switch still communicating
No other I/O packs on same IONet switch are communicating
Troubleshooting
I/O Pack Communication Troubleshooting
Potential Problem
I/O pack power
Ethernet cable from I/O pack
Incomplete downloads to pack or controller
Improper ToolboxST configuration
Bad IONet switch port
I/O pack failure
Switch power
Switch communication
Improper switch configuration
Switch failure
Public Information
GEH-6721_Vol_I_BP System Guide 185