212-M-V2.1
Communications 37
4.3.6 List of Data Registers
The following list describes data registers for the Model 212. Engineering
units programmed during setup are used for floating point values.
Conventional numbering of registers start from 1, therefore be aware that
"register 1" in this case has an "address 0" (low level framing) and so on.
Read and Write Registers
Register Name Value Note
01 Heating mode 00 - heat
01 - cool
02 - heat/cool
03 - charge/discharge
02 Total reset 00 - no action
01 - reset totals
03 Flowmeter location 00 - feed line
01 - return line
If High and Low Alarms are installed:
04 Relay 0 mode 00 - flow high
01 - flow low
02 - power high
03 - power low
04‐∆t°high
05‐∆t°low
06 - feed t° high
07 - feed t° low
08 - return t° high
09 - return t° low
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