Yokogawa 212 Heat Calculator - Manual (Page 40)

Code Name Description
05 Acknowledge The slave has accepted the
request and is processing it,
but a long duration of time will
be required to do so.
06 Slave device busy The slave is engaged in
processing a long duration
program command. The
master should re-transmit the
message later when the slave is
free.
4.3.6 List of Data Registers
The following list describes addresses and meaning of data registers for the
Model 212. Engineering units programmed during setup are used for floating
point values. Conventional numbering of registers often starts from 1, therefore
be aware that "register 1" in this case has an "address 0" and so on.
Read and Write Registers
Address Name Value Note
00 Heating mode 00 - heat
01 - cool
02 - heat/cool
03 - charge/discharge
01 Total reset 00 - no action
01 - reset totals
02 Flowmeter location 00 - feed line
01 - return line
38 Communications