Commissioning
Field bus connection and configuration
20
Item No.: 099-008225-EWM01
4.4.4.4 Connection of the Profibus module
The field bus is connected via a 9-pole SUB-D plug connector (socket) as follows:
Pin Signal
Function
3
B-signal
Positive communication signal according to RS485
4
RTS
Send request signal
5
GND
Isolated reference mass for field bus
6
+5V
Isolated reference voltage for field bus
8
A-signal
Negative communication signal according to RS485
Figure 4-11
4.4.4.5 Setting the subscriber address
The module must be assigned a unique address which is a one-off in the network before commissioning.
This is carried out via two selector switches in a range of 1 to 99. The right-hand switch selects the single
place digit, and the left-hand switch selects the tens place digit for the address setting. The setting is
carried out in decimal format:
Example: Address 42 = left-hand switch position 4 (x10) + right-hand switch position 2 (x1)
Figure 4-12
NOTE
The settings for the network address must be set before the module is commissioned.
Any subsequent change to the setting only becomes effective after the power is enabled
and after switching the module back on.
