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A.2.2
Custom assembled cables
As an alternative to the preassembled standard cables, you can assemble cables individually
yourself. A reader connector with screw terminals is available for self-assembly (see the
relevant system manual). Cables and reader connectors can be ordered using the TIA
Selection Tool, the SIMATIC Ident Configuration Guide.
Requirements for cables and connectors
You need cables of the following specifications for a custom assembled cable:
● 6 x 0.25 mm
● LiYC11Y 7 x 0.25
You can use the following connectors:
● CM-sided: M12/8-pin, male
6GT2090-0BE00
● Reader-sided: M12/8-pin, female
6GT2090-0BD00
Pin assignment
The pin assignment is listed in the following table.
Table A- 2
M12 connector (male)
SIMATIC RF166C
Operating Instructions, 12/2019, C79000-G8976-C578-01
2
Pin assignment
Pin
Assignment
RS422
1
+24 V
+24 V
2
-RxD
--
3
0 V
0 V
4
+RxD
RxD
5
+TxD
+5 V
6
-TxD
--
7
--
TxD
8
Functional
Functional
ground /
ground /
shielding
shielding
Appendix
A.2 Connecting cables
Core color
RS232
Note data
sheet provided
by cable
manufacturer
163
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