Commissioning the DP/PA Link
6-11
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
Procedure
1. Open the front doors of the IM 157.
2. Set the required PROFIBUS address with a screwdriver. The PROFIBUS
address is the sum of the values of all switches that are in the “ON” position
(switch set to the right).
64
32
16
8
4
2
1
ON
M
L+
M
DC 24 V
PROFIBUS address:
64
+ 32
+ 2
+ 1
= 99
IM 157
ADR
Figure 6-5 Example for setting the PROFIBUS address
“ADR” switch
The “ADR” switch is reserved for setting the address with software in future
firmware versions. In the current firmware version, the switch must always be set
to “OFF”.
Changing the PROFIBUS address
You can change the set PROFIBUS address at any time. The IM 157 will accept
the setting after the 24V DC power supply has been turned off and on again.
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