Communication
11.3 PROFIBUS
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
973
Assigning the PROFIBUS address
In a PROFIBUS network, each device is assigned a PROFIBUS address. This address can
range from 0 through 127, with the following exceptions:
● Address 0: Reserved for network configuration and/or programming tools attached to the
bus
● Address 1: Reserved by Siemens for the first master
● Address 126: Reserved for devices from the factory that do not have a switch setting and
must be re-addressed through the network
● Address 127: Reserved for broadcast messages to all devices on the network and may
not be assigned to operational devices
Thus, the addresses that may be used for PROFIBUS operational devices are 2 through
125.
In the Properties window, select the "PROFIBUS address" configuration entry. STEP 7
displays the PROFIBUS address configuration dialog, which is used to assign the
PROFIBUS address of the device.
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