Siemens SIMATIC CP 340 User Manual

Connecting Cables
B.3 X27 (RS 422/485) Interface of the CP 340–RS 422/485
PtP coupling and configuration of CP 340
182 Manual, 04/2011, A5E00369892-03
X 27 connecting cables (S7 (CP 340) - CP 340/CP 441)
The figure below illustrates the connecting cable for a point-to-point connection between a
CP 340 and a CP 340/CP 441, for RS 485 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 screw-locking
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Figure B-15 X27 Connecting Cable CP 340 - CP 441/CP 340 RS 485 Operation (Two-Wire Mode)
Note
The previous figure shows the wiring if you want to make the connecting cable yourself.
In both RS 485 mode (two wire) and RS 422 mode (four wire) you can also use Siemens
connecting cables. The figure below illustrates the internal wiring in the connecting cable.
The jumpers 2-4 and 9-11 are "installed" by parameter assignment of the CP.

Siemens SIMATIC CP 340 Specifications

General

Brand	Siemens
Model	SIMATIC CP 340
Category	Computer Hardware
Language	English