Siemens SIPLUS HCS Series Operating Instructions Manual page 86

Connecting
6.6 Connecting the heating elements and three-phase line supply
POM4320
Position of the connections
84
Pin assignments X1 to X6
X1 3-pin plug for L1:
Power output 1 ... 3 outgoing
X2 3-pin plug for L2:
Power output 4 ... 6 outgoing
X3 3-pin plug for L3:
Power output 7 ... 9 outgoing
X4 3-pin plug for L2:
Power output 1 ... 3 incoming
X5 3-pin plug for L3:
Power output 4 ... 6 incoming
X6 3-pin plug for L1:
Power output 7 ... 9 incoming
SIPLUS HCS4200 PROFINET/PROFIBUS DP
Operating Instructions, 07/2019, A5E35066204A/006