HBM MP85A - Page 44

Electrical connection
44 A0293_06_E00_03 HBM: public MP85A
PROFIBUS nodes (there is usually a slide switch on the housing of the
PROFIBUS connector for this purpose).
PROFIBUS
connector socket
1
5
6
9
GND
RS485‐RTS
RS485‐B
RS485‐A
Vcc (5 V)
Fig. 5.16 PROFIBUS connection as per standard
Example:
First device in
the bus line
Last device in the
bus line
PROFIBUS connector
slide switch set to
“Resistor ON”
PROFIBUS connector slide switch set to “Resistor ON”
PROFIBUS
connector
PROFIBUS
connector
Fig. 5.17 PROFIBUS operation