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Setting the PROFIBUS address
The factory setting for the rotary coding switches is 0
There are two ways to set the PROFIBUS address:
1. Via p0918
– To set the bus address for a PROFIBUS node using STARTER, first set the rotary
– Then use parameter p0918 to set the address to a value between 1 and 126.
2. Via the PROFIBUS address switches on the Control Unit
– The address is set manually to values between 1 and 126 using the rotary coding
Note
The rotary coding switches used to set the PROFIBUS address are located beneath the
cover.
Note
Address 126 is intended for commissioning. Permitted PROFIBUS addresses are 1 ... 126.
When several Control Units are connected to a PROFIBUS line, you set the addresses
differently compared to 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 coding switches – or selectively in parameter p0918. Each change made to the bus
address is effective only after a POWER ON.
The currently set address of the rotary coding switch is displayed in parameter r2057.
X127: LAN (Ethernet)
Table 4- 16
Connector type: RJ45 socket
Converter cabinet units
Operating Instructions, 11/2017, A5E36652151A
code switches to 0
(00
dec
switches. In this case, p0918 is only used to read the address.
X127 LAN (Ethernet)
Pin
Designation
1
TXP
2
TXN
3
RXP
4
Reserved, do not use
5
Reserved, do not use
6
RXN
7
Reserved, do not use
8
Reserved, do not use
dec
) and 127
(7F
).
hex
dec
hex
Technical specifications
Ethernet transmit data +
Ethernet transmit data -
Ethernet receive data +
Ethernet receive data -
Electrical installation
4.8 Signal connections
(00
).
hex
93
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