ET 200S in the PROFIBUS Network
3-5
ET 200S Interface Module IM 151/CPU
A5E00058783-01
3.2 Setting the PROFIBUS Address
Features
Use the PROFIBUS address to specify the address at which the IM 151/CPU is
contacted on the PROFIBUS-DP.
Prerequisites
The PROFIBUS-DP address for the IM 151/CPU is set via a DIP switch. The
DIP switches are on the front of the module.
Permissible PROFIBUS-DP addresses are 1 to 125.
If you set an invalid address, the IM 151/CPU will not start up. It can then be
reached on the PROFIBUS bus system at address 126.
Each address can be allocated only once on the PROFIBUS-DP.
The PROFIBUS address configured in STEP 7 must be identical to the DIP
switch setting.
If the setting does not match, the IM 151/CPU will not start up. It can then be
reached on the PROFIBUS bus system at the address set on the DIP switch.
At startup without STEP 7 configuration, only the setting on the DIP switch is
relevant.
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