3 Product description
10
9964042xx1-mub-en - V02
2021/11
Cascade connection of the domestic hot water modules
The following illustration shows how you must connect the three domestic hot water modules via
two bus lines in a cascade connection.
Plug the jumper of the first and the last participant of the modbus communication into the plug
connector which is marked as "Pos. 2".
The jumper of the controller which is connected between the first and the last participant must be
plugged into the marked "Pos. 1" of the plug connector.
After that, mount the two strain reliefs and the front panel of the controller.
Set up the power supply of the installation and put the controller into operation according to the
controller instructions.
The following table shows the required positions of the jumpers, depending on the number of the
domestic hot water modules / cascade modules which are part of the cascade connection.
Number of
cascade module
Client
Server 1
Server 2
Server 3
2
Pos. 2
Pos. 2
-
-
3
Pos. 2
Pos. 1
Pos. 2
-
4
Pos. 2
Pos. 1
Pos. 1
Pos. 2