Siemens SIMATIC ET 200eco PN - Page 53

Wiring
3.6 Pin assignment of connectors
ET 200eco PN
Operating Instructions, 08/2016, A5E01250250-AJ
53
Table 3- 17 Pin assignment for RTD for the 8 AI 4 U/I + 4 RTD/TC 8×M12 I/O device
Pin
Assignment of X2, X4, X6, X8 (for RTD)
View of the cable connector
(wiring side)
Connector X2: Input signal 4
Connector X4: Input signal 5
Connector X6: Input signal 6
Connector X8: Input signal 7
4-conductor
1
Constant current line positive I
Cn
+
2
Measurement cable positive M
n
+
3
Constant current line negative I
Cn
-
4
Measurement cable negative M
n
-
5 Functional earth FE
3-conductor
1
Constant current line positive I
Cn
+
2
Measurement cable positive M
n
+
3 Measurement cable negative M
n
- and constant
current line negative I
Cn
-
5 Functional earth FE
2-conductor
1 Measurement cable positive M
n
+ and constant
current line positive I
Cn
+
3 Measurement cable negative M
n
- and constant
current line negative I
Cn
-
5 Functional earth FE
① 4- or 5-core shielded copper cable
②
3-, 4-, or 5-core shielded copper cable