8
8903/PB Profibus Communications Interface
Setting Node Address
The DIP switches allow you to select 8 bits for the Node Address (NA) (0-255)
Note:
If all 8 bits are in the ON position, the Node Address is set by software.
8903/PB
Front View
DIP
Switch
Value
Function
Example
1
1 (2
0
)
0 OFF
2
2 (2
1
)
0 OFF
3
4 (2
2
)
0 OFF
4
8 (2
3
)
0 OFF
5
16 (2
4
)
0 OFF
6
32 (2
5
)
1 ON
7
64 (2
6
)
0 OFF
8
128 (2
7
)
Node Address
0 – 255
0 OFF
NA = 32
Note:
Only addresses 1 to 125 are valid Profibus addresses.
LED Indications
The STATUS LED indicates the state of the connected network.
The SYNC LED is for future use.
Initial Power-on Checks
With the correct connections to the active PLC/SCADA supervisor, the
STATUS LED'will lite. Refer to Appendix A : Troubleshooting, page20
for details of LED indications.
