Communication via PROFIBUS DP
4.2 Commissioning PROFIBUS
Communication
Function Manual, 12/2018, 6SL3097-5BD00-0BP0
87
Setting the PROFIBUS address
The factory setting for the rotary coding switches is 0
dec
(00
hex
).
There are two ways to set the PROFIBUS address:
1. Using the STARTER commissioning tool (parameter p0918)
– To set the bus address for a PROFIBUS node using STARTER, first set the rotary
code switches to 0
dec
(00
hex
) and/or 127
dec
(7F
hex
).
– Then set the address to a value from 1 to 126 using parameter p0918.
2. Using the PROFIBUS address switches on the Control Unit
– The address is set manually to values from 1 to 126 using the rotary coding switches.
In this case, parameter p0918 is only used to read the address.
Note
The rotary coding switches used to set the PROFIBUS address are located beneath the
cover.
Note
Address 126 is used for commissioning. Permitted PROFIBUS addresses are 1
... 126.
When several Control Units are connected to a PROFIBUS line, you set the addresses
differently than for the factory setting. Each PROFIBUS address in a PROFIBUS line can
only be assigned once. Either set the PROFIBUS address in absolute terms using
the rotary
– or selectively in parameter p0918. Each change made to the bus address
is not effective until POWER ON.
The currently set address of the rotary coding switch is displayed in parameter r2057.
Note
Only values from 1 to 12
6 (7E
hex
) are valid for PROFIBUS addressing. If values above 127
are set, then the set value is interpreted as "0". If a value "0" or "127" is set, the value in
parameter p0918 defines the PROFIBUS address.
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