177
Item LED
LED
State/Color
Description
1 Module
Status
Solid Green Power on with self-test passed
Solid Red In power-up process or hardware failure or firmware
corrupt
Blink Green
(@ 4 Hz)
Normal scanning
Blink Red
(@ 0.5 Hz)
Firmware upgrade
Blink Red
(@ 1
strobe)
Communication error
Blink Red
(@ 3
strobe)
Running with error for module diagnostic and
channel diagnostics (detected by the module itself)
2 Channel
LEDs
Digital Input:
OFF Channel disabled or State 0
On/Green State 1
Digital Output
OFF Channel disabled or State 0
On/Green State 1
Analog Input
OFF NA
Analog Output
OFF NA
Chapter 8 - Diagnostics and Troubleshooting
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