Manual VIPA System 200V Chapter 3 Deployment IM 253DP
HB97E - IM - RE_253-xDPxx - Rev. 12/44 3-51
Using the diagnostic LEDs
The following example shows the reaction of the LEDs for different types of
network interruption.
Interruption at position A
The PROFIBUS has been interrupted.
Interruption at position B
Communication via the backplane bus
has been interrupted.
LED
Slave 1
Position of
interruption
LED A B
RD blinks off
ER off on
DE off off
A
B
Slave 1
Slave 2
Master
LED
Slave 2
Position of
interruption
LED A B
RD blinks on
ER off off
DE off on
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