D397-53-880 Issue C
Page 10
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Operation
4.4
Address set-up
The module address can be set from 1 to 125 using the two hexadecimal rotary switches on the front panel. The lower
switch defines the lower half of the address byte (nibble) and the upper switch defines the upper half of the address
byte. Each node on a Profibus network must have a unique address. The address switches will only be read by the
unit at power-up. Any change of address setting after power-up will be ignored until next power-up.
The following table may assist.
Table 4 - Front panel symbols and their functions
Symbol
Name
Function
Data exchange
Module is in data exchange as defined by the Profibus standard.
Off-line
Module is not in data exchange as defined by the Profibus standard.
Error
ON at the same as Offline LED = Configuration or parameterisation
error:
Flashing at 1 Hz = Invalid address selected.
Power
Internal 5 V supply is operating.
Upper address
switch
Sets value of upper nibble of address (Hexadecimal).
Lower address
switch
Sets value of lower nibble of address (Hexadecimal).
Table 5 - Address switch settings
Address in
Decimal
Upper switch
setting
Lower switch
setting
Address in
Decimal
Upper switch
setting
Lower switch
setting
0
0
0
63
3
F
1
0
1
64
4
0
2
0
2
65
4
1
3
0
3
66
4
2
4
0
4
67
4
3
5
0
5
68
4
4
6
0
6
69
4
5
7
0
7
70
4
6
8
0
8
71
4
7