Chapter 2 Hardware description Manual VIPA System 200V
2-10 HB97E - IM - RE_253-xDPxx - Rev. 12/44
Every PROFIBUS slave has an internal power supply. This power supply
requires DC 24V. In addition to the electronics on the bus coupler, the
supply voltage is also used to power any modules connected to the
backplane bus. The "max. current drain at backplane bus" can be found in
the Technical Data.
The power supply is protected against reverse polarity.
PROFIBUS and backplane bus are isolated from each other.
Attention!
Please ensure that the polarity is correct when connecting the power
supply!
The redundant slave includes one LED row for every slave unit that are
available for diagnostic purposes The following table explains the different
colors of the diagnostic LEDs.
Label Color Description
PW green Indicates that the supply voltage is available on the backplane bus. (Power).
ER red Turned on and off again when a restart occurs.
Is turned on when an internal error has occurred.
Blinks when an initialization error has occurred.
Alternates with RD when the master configuration is bad (configuration error).
Blinks in time with RD when the configuration is bad.
RD green Blinks at positive self test(READY) and successful initialization.
DE green DE (Data exchange) indicates PROFIBUS communication activity.
During redundant operation the active slave shows its activity via the green
RD-LED, at the passive slave the RD-LED is off. At both slaves the PW-
and the DE-LED are on.
PW
ER
RD
DE
IM 253 DPR
D
P
1
D
P
2
PW
ER
RD
DE
9
9
RD On
active
Slave
RD Off
passive
Slave
RD DE Description
on on active slave (write and read)
off on passive backup slave (read)
This address selector is used to configure the PROFIBUS address for the
DP slave. Addresses may range from 1 to 99. Addresses must be unique
on the bus.
0
1
The slave address must have been selected before the bus coupler is
turned on.
When the address is set to 00 during operation, a once-off image of the
diagnostic data is saved to Flash-ROM. Please take care to reset the
correct PROFIBUS address, so at the next PowerOn the right PROFIBUS
address is used!
Power suppl
LEDs
LEDs at redundant
operation
Address selector
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