12 MODBUS
Communication specifications: RS-485
Protocol :ModbusRTU：9600,8,N,1
Baud rate: 9600bps
Data bits: 8 Data bits
Parity bit：None Parity
Stop bit: 1 stop bit
Connections
Connect on the back of the controller.
Modular unit: connect the modbus to the MASTER unit port.
Enabling
Press Menu + for 3 sec
or
SERVICE MENU > SETTING ADDRESS > Modbus enable > YES
01
query
03
reading
06
single register writing
16
multiple register writing
Function codes
- H1
+ H2
Address function notes
0 Mode
1 Cooling, 8 Off
1 Temperature setpoint
from -8℃ (or Tsafe*) to 20℃
2 Temperature setpoint B
from -8℃ (or Tsafe*) to 20℃
Reading register, writing a single register, multiple register writing
*Tsafe > pag43
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