Siemens ASM 456 Operating Instructions Manual page 58

Appendix
A.1 Connecting cables
Maximum cable length
The ASM 456 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 information in the relevant system manuals.
Sequential connection of more than 2 sub-sections to form a long section of cable should be
avoided due to the additional contact resistances.
Pin assignment
Table A- 1
Table A- 2
58
M12 connecting cable ↔ reader
M12 connector (male)
Connecting cable/extension cable M12 ↔ M12
M12 connector (male)
Write/read device 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, 07/2015, J31069-D0162-U001-A6-7618
ASM 456 interface module