The CS135 has LED indicator lights that flash to indicate normal or fault statuses.
Where:
- 1 flash every 10 seconds = OK, no fault
- 2 flashes every 10 seconds = warning (possible degraded performance)
- 3 flashes every 10 seconds = alarm (measurements not possible)
The output messages also contain information about Warnings and Alarms, known as the WA output. This is a single character with one of the following values:
- 0 = No alarm or warning
- W = Warning
- A = Alarm
W or A are output in the message strings when necessary.
The description of the warning or alarm is obtained from the fault Flag code at the end of each message.