en – Original instructions
28
A2
9 RS485 port 2: RS485-2P A (+) active
only with optional module
GND
8 Electronic GND
Communication
Bus
B1
7 RS485 port 1: RS485-1N B (-)
ACT, HCS control mode: RS 485 port 1
for external communication
Control mode MSE, MSY: RS 485 port 1
for multi-pump systems
A1
6 RS485 port 1: RS485-1P A (+)
GND
5 Electronic GND