47 Rev. 2.4 (3/05)
Honeywell Analytics CM4 Protocol Manual
Operation
CM4 Instrument Upon power-up, the CM4 instrument conducts a
Power-up self-diagnostic procedure to check its memory, hardware,
and voltages. After the selfdiagnostics, the instrument
automatically begins monitoring, and the COM port
(if enabled) is activated.
Commands Your CM4 instrument will accept and process commands
sent to it from your equipment.
Responses The CM4 instrument will send a return communication for
any message it receives at its address. Included in most
response packets from the CM4 instrument are date and
time stamps.
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