Omron CJ Series Operation Manual page 146

4 Data Exchange with the CPU Unit
Name of Device Variable for CJ-
series Unit
*_MstrBusErr
*_MstrProtErr
*_MstrAdrErr
4-20
Type R/W Description
BOOL R Disturbed Bus
error
BOOL R PROFIBUS
protocol error
BOOL R Master
address dupli-
cation error
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
Function
TRUE:
Indicates that distorted messages have been
received by the Unit. This may occur if the network
is not properly terminated or a cable is used,
which is too long for the selected baud rate.
FALSE:
Indicates that no Disturbed Bus error has
occurred.
TRUE:
Indicates an error has occurred in the protocol
handling, e.g. a transmitted token frame could not
be read back.
Note: In case this error occurs, the Unit will
automatically switch to OFFLINE mode.
FALSE:
Indicates that no PROFIBUS protocol error has
occurred.
TRUE:
Indicates there is another master on the bus with
the same with the same device address as the
CJ1W-PRM21.
Note In case this error occurs, the Unit will
automatically switch to OFFLINE mode.
FALSE:
Indicates that no Master Address Duplication Error
has occured.