Bosch Rexroth IndraControl VCP 25 - Fig. 7-7: Pin Assignment RS485; Fig. 7-6: 25 Pin D-SUB Female Connector Strip; Termination; Pin Assignment

7-6 Bosch Rexroth AG | Electric Drives and Controls Rexroth IndraControl VCP 25 | R911299720 / 02
Interfaces
7.1.2 RS485 (X3-SER1)
The interface is suitable for point-to-point and for multi-point connec-
tions.
The wires belonging together are marked with „A“ and „B“. Some
descriptions refer to the pins with „+“ and „-“ , where A = + and B = -.
7.1.2.1 Pin Assignment
Fig. 7-6: 25 pin D-SUB female connector strip
Connector in the small operator terminal: 25-pin D-SUB female con-
nector strip
7.1.2.2 Termination
For point-to-point connections, always activate the termination. For
multi-point connections, only activate the termination at the cable end.
Signal Logic 1 U
A
- U
B
<= -0.3 V i.e. (U
A
< U
B
)
Signal Logic 0 U
A
- U
B
>= +0.3 V i.e. (U
A
> U
B
)
Pin Designation Function
8 T(A) Transmitted data (+)
9 T(B) Transmitted data (-)
11 SGND Signal Ground
22 R(A) Received data (+)
23 R(B) Received data (-)
Fig. 7-7: Pin assignment RS485
The D-SUB connector strips must be shielded sufficiently. See chapter
„Shielding D-SUB Connectors“ on page 7-23.