Termination Of The Rs 485 Interface - Leuze electronic BPS 8 Original Operating Instructions

7.4.4

Termination of the RS 485 interface

Permanently installed termination networks are present in the MA 8-01 and the MA 8-02
which differ in terms of resistance values. The resistor network terminates the outgoing
RS 485 data interface, as shown in Figure 7.11, and cannot be switched off.
MA 8-01:
390
MA 8-01:
220
MA 8-01:
390
Figure 7.11: Termination of the RS 485 interface in the MA 8-01/MA 8-02
Leuze electronic
+5.2 V
MA 8-02:
47 k
RS 485 A
MA 8-02:
150
RS 485 B
MA 8-02:
47 k
GND
BPS 8
Electrical connection
RS 485 receive/transmit data
A-line, PIN 4
RS 485 receive/transmit data
B-line, PIN 2
60