Honeywell HC900 - I;O Module Indicators

Diagnostics and Troubleshooting - I/O Module Indicators
Revision 19 HC900 Process Controller Installation and User Guide 175
06/14
I/O Module Indicators
Figure 87 – I/O Module LED indicators
Table 30 – LED Indications on I/O Module
Figure 87 item LED LED State/Color Description
1 Module Status Off
Solid Red
Blinking Red
Blinking Yellow
Solid green
Blinking Green
No power.
Hardware failure
Diagnostic Code; refer to Table 31
– I/O Module LED Diagnostics.
At least one output is Forced.
Cold start with passing diagnostics
Normal scanning
2 Channel LEDs
(one per input or
output)
Green (On/Off) For Inputs, indicates On or Off status
of the field input even if Forced to the
opposite state.
For Outputs, indicates On or Off status
of the output including if Forced.