Siemens SIMATIC CP 340 User Manual page 183

Connecting cable X 27 (S7 (CP 340) - CP 544, CP 524, CPU 928B, CPU 945, CPU 948)
The figure below illustrates the connecting cable for a point-to-point connection between a
CP 340 and a CP 544, CP 524, CPU 928B, CPU 945, CPU 948, for RS 422 mode.
For the connecting cables you will require the following male connectors:
● At the CP 340 end: 15-pin sub D male connector with screw-locking
● At communication partner: 15-pin sub D male connector with shift latch
PtP coupling and configuration of CP 340
Manual, 04/2011, A5E00369892-03
Figure B-16 X27 Connecting Cable CP 340 - CP 544, CP 524, CPU 928B, CPU 945, CPU 948 for
RS 422 mode
B.3 X27 (RS 422/485) Interface of the CP 340–RS 422/485
Connecting Cables
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