CLIVET WSAN-XES 18.2, Instructions For Installation, Use And Maintenance Manual, Page: 22 / 52

22 WSAN-XES 18.2-35.2 M0SM40N17-04
MODBUS
The modbus in reading is always enabled.
It is possible to read 1 register at a time.
To enable it for writing:

set register 138 to 1, or

set on the controller
Project Menu → Controller select → Modbus = Yes
Communication spec: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 .
Unit address
The default address is 1.
It can be modified on the controller:
Project Menu → Controller select → Modbus address
03
reading
06
single register writing
16
multiple register writing
Register
Address
Data Content Remark
0
Mode
（
1 Cooling
、
2 Heating
,
8 Off
）
1
Temperature setpoint
COOL (5
℃
~20
℃
); HEAT ( 25
℃
~55
℃
)
2
Temperature setpoint B COOL( 5
℃
~20
℃
) HEAT ( 25
℃
~55
℃
)
4
water setpoint
30°C~60°C Available for single unit
Reading register, writing a single register, multiple register writing
Function code
- H1
+ H2