Appendix B
22
Messages
Bits 3 and 4 can be used to monitor the test progress.
Bits 5-10 are used to generate alarms. Depending on the selected alarm mode,
they operate the alarm relay output(s). But they can also be monitored directly by
a PLC/MMI program and used to drive indicators, for example.
Bit 11 is used internally to detect that the ICM is being controlled by modbus (from
a PLC or by LPA-View).
Finally bits 12-14 reflect the state of the ICM ``start signal’’ input and alarm output
relays.
Message: Water Sensor
Byte
Bit Length Type
Item
1
1
8 unsigned RH%
2
1
8 signed
Temperature degrees C
