Siemens Simatic S7-300 CP 341 - Figure 2-27 Wiring of the Receiver at the X27 (RS 422;485) Interface (ASCII Driver)

Basic Principles of Serial Data Transmission
2.8 Configuration data
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01 93
Receive line initial state
The figure illustrates the wiring of the receiver at the X27 (RS 422/485) interface:
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Figure 2-27 Wiring of the receiver at the X27 (RS 422/485) interface (ASCII driver)
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