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Chapter 2 Hardware description
Manual VIPA System 200V
2-6
HB97E - CPU - RE_21x-2BM03 - Rev. 14/44
The CPU has got LEDs on its front side. In the following the usage and the
according colors of the LEDs is described.
Name
Color Description
PW
green Indicates CPU power on.
R
green CPU status is RUN.
S
yellow CPU status is STOP.
SF
red
Is turned on if a system error is detected
(hardware defect)
FC
yellow Is turned on when variables are forced (fixed).
MC
yellow This LED blinks when the MMC is accessed.
The LEDs are located in the left half of the front panel and they are used for
diagnostic purposes.
The following table shows the color and the significance of these LEDs.
Name Color
Description
RN green DP-Master-RUN
On: Master status is RUN. The slaves are being
accessed and the outputs are 0 ("clear" state).
On with DE: Master status is "operate". and is
communicating with the slaves.
IF red
Initialization
error
On: Error in PROFIBUS configuration
DE
yellow DE (Data exchange)
On: Indicates PROFIBUS communication activity.
ER red Error
On: Slave has failed
LEDs CPU
LEDs PROFIBUS
DP master