Siemens SIMATIC Distributed I/O ET 200eco PN Operating Instructions Manual page 50

Pin
4
5
①
4- or 5-core shielded copper cable
②
3-, 4-, or 5-core shielded copper cable
Table 3-17 Pin assignment for RTD for the 8 AI 4 U/I + 4 RTD/TC 8×M12 I/O device
Pin
4-conductor
1
2
3
4
5
ET 200eco PN
Operating Instructions, 06/2022, A5E01250250-AN
Assignment of X1, X3, X5, X7
Connector X1: Input signal M
Connector X3: Input signal M
Connector X5: Input signal M
Connector X7: Input signal M
Functional earth FE
Assignment of X2, X4, X6, X8 (for RTD)
Connector X2: Input signal 4
Connector X4: Input signal 5
Connector X6: Input signal 6
Connector X8: Input signal 7
Constant current line positive I
Measurement cable positive M
Constant current line negative I
Measurement cable negative M
Functional earth FE
View of the cable connector
(wiring side)
- Voltage
0
-
1
-
2
-
3
Current
4-wire transducer
2-wire transducer
View of the cable connector
(wiring side)
+
Cn
+
n
-
Cn
-
n
3.6 Pin assignment of connectors
Wiring
51