Siemens SIMATIC ET 200eco PN Operating Instructions Manual page 50

Wiring
3.6 Pin assignment of connectors
Table 3- 16
Pin
4-conductor
1
2
3
4
5
3-conductor
1
2
3
5
2-conductor
1
3
5
① 4- or 5-core shielded copper cable
② 3-, 4-, or 5-core shielded copper cable
50
Pin assignment for RTD for the 8 AI 4 U/I + 4 RTD/TC 8xM12 I/O device
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
Measuring line positive (M+)
Constant current line negative (I
Measuring line negative (M-)
Functional ground (FE)
Constant current line positive (I
Measuring line positive (M+)
Measuring line negative (M-) and
constant current line negative (I
Functional ground (FE)
Measuring line positive (M+) and
constant current line positive (I
Measuring line negative (M-) and
constant current line negative (I
Functional earth (FE)
View of the cable connector
(wiring side)
4-conductor
+)
C
-)
C
+)
C
3-conductor
-)
C
+)
C
-)
C
2-conductor
Operating Instructions, 06/2009, A5E01250250-04
ET 200eco PN