Siemens Simatic S7-300 CP 341 User Manual page 232

Connecting cables
B.2 20 mA TTY interface on the CP 341-20mA-TTY
20mA-TTY connecting cable (S7 (CP 341) - CP 523)
The figure below illustrates the connecting cable for a point-to-point connection between a
CP 341 and a CP 523.
For the connecting cables you will require the following male connectors:
● On the CP 341 side: 9-pin sub D male connector with screw-locking
● On the communication partner: 25-pin sub D male connector with screw-locking
Figure B-10
232
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20mA-TTY connecting cable CP 341 - CP 523
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
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Manual, 09/2008, A5E02191071-01