Termination; Fig. 7-5: Pin Assignment Tty / 20 Ma, Active - Bosch Rexroth IndraControl VCP 20 Project Planning Manual

7-4 Bosch Rexroth AG | Electric Drives and Controls
Interfaces

7.1.1.2 Termination

Pin Designation Function
10 T+ Transmitted Data, Positive Polarity
12 S1+ Power Source 1, Positive Polarity
13 R+ Received Data, Positive Polarity
14 R- Received Data, Negative Polarity
16 S2+ Power Source 2, Positive Polarity
19 T- Transmitted Data, Negative Polarity
21 S1- Current Sink 1, Negative Polarity
24 S2- Current Sink 2, Negative Polarity

Fig. 7-5: Pin assignment TTY / 20 mA, active

The D-SUB connector strips must be shielded sufficiently. See chapter
„Shielding D-SUB Connectors" on page 7-19.
When channel SER1 is operated as a current loop, the termination for
the RS485 must be OFF.
Rexroth IndraControl VCP 20 | R911299722 / 02