Power-up diagnostics, Module status, Network status – Rockwell Automation 1790P-4R0 CompactBlock LDX I/O RTD/Resistance Input Module User Manual
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Publication 1790-UM002A-EN-P
Diagnostics and Troubleshooting 4-3
Power-up Diagnostics
Power-up diagnostics includes module status and network status.
Module Status
At module power-up, a series of internal diagnostic tests are performed.
These diagnostic tests must be successfully completed. The following
table shows module status LED indictor operation.
Network Status
The network status LED indicator shows the condition of the network
connection. The following tables show network status LED indicator
operation.
Table 4.1 Module Status Power-up Diagnostics
1790D-4R0/T4R0, 1790P-T4R0
LED Indicator:
Status:
Description:
Module Status
Solid Red
Unrecoverable fault
Flashing Red
Recoverable fault
Solid Green
Normal operation - OK
Flashing Green
Standby
Off
No power
Table 4.2 Network Status Power-up Diagnostics for 1790D-4R0/T4R0)
1790D-4R0/T4R0
LED Indicator:
Status:
Description:
Network Status
Solid Red
Unrecoverable communication fault
Flashing Red
Recoverable communication fault
Solid Green
Communication path complete - OK
Flashing Green
Communication path incomplete
Off
Device not online or not powered
Table 4.3 Network Status Power-up Diagnostics for the 1790P-T4R0
1790P-4R0
LED Indicator:
Status:
Description:
Network Status
Solid Green
Communication path complete - OK
Flashing Green
Communication path incomplete
Off
No power or baud rate search