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Appendix
A.1 Connecting cables
Figure A-5
Maximum connecting cable length for RS-422
The RF170C can be operated with every reader configuration with the maximum cable length
of 50 m. In some situations, longer connecting cables up to 1000 m are possible. The current
consumption of the connected reader must, however, be taken into account. You will find
further information in the relevant system manuals.
Joining more than 2 cables to form a long cable should be avoided due to the additional
contact resistances.
Maximum connecting cable length for RS-232
For RS-232 devices, the maximum cable length is 30m. If the RS-232 device is supplied with
the 5 V voltage from the RF170C device the maximum cable length is reduced to 5 m.
Pin assignment
Table A- 1
M12 connector (male)
Table A- 2
M12 connector (male)
56
M12 connector cable ↔ 5-pole bush housing (PicoBlade); l = 2 m
Connecting cable M12 ↔ reader (MOBY I / E / U)
Connecting cable/extension cable M12 ↔ M12
Reader connector (female)
1
2
2
5
3
3
4
4
5
6
6
1
7
–
8
7
M12 connector (female)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
Operating Instructions, 02/2022, J31069-D0176-U001-A6-7618
SIMATIC RF170C
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