Siemens SIMATIC ET 200eco PN Operating Instructions Manual page 54

Wiring
3.6 Pin assignment of connectors
Table 3- 18
Pin
1
2
3
4
5
①
54
Pin assignment for thermocouple for the 8 AI 4 U/I + 4 RTD/TC 8×M12 I/O device
Assignment X2, X4, X6, X8
(for thermocouples and ±80 mV)
Not used
Connector X2: Input signal M
Connector X4: Input signal M
Connector X6: Input signal M
Connector X8: Input signal M
Not used
Connector X2: Input signal M
Connector X4: Input signal M
Connector X6: Input signal M
Connector X8: Input signal M
Functional earth FE
3-, 4-, or 5-core shielded copper cable
View of the cable connector
(wiring side)
+
4
+
5
+
6
+
7
-
4
-
5
-
6
-
7
Operating Instructions, 08/2016, A5E01250250-AJ
ET 200eco PN