4 Data Exchange with the CPU Unit
4-16
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
Name of Device Variable for CJ-
series Unit
Type R/W Description Function
*_UnitErr BOOL R Unit error flag The Unit error flag collects the status of all error
flags in the *_UnitSta area.
TRUE:
Changed to TRUE by the Unit if *_MstrErr,
*_NewErrLogSta, *_ParamStorErr,
*_ParamLoadErr, *_FileRdErr, or *_LogStorErr
are set to TRUE.
FALSE:
Changed to FALSE by the Unit if *_MstrErr,
*_NewErrLogSta, *_ParamStorErr,
*_ParamLoadErr, *_FileRdErr, or *_LogStorErr
are FALSE.
*_MstrErr BOOL R Master error
flag
The master error flag collects the error flags in the
master errors word, i.e.*_MstrErrSta. The Master
Errors word contains all error flags related to the
PROFIBUS Master functions.
TRUE:
*_MstrErr is TRUE if any of the flags in the Master
Errors word, i.e. *_MstrErrSta are TRUE, see 4-2-
5 Master Errors (*_MstrErrSta).
FALSE:
*_MstrErr is FALSE if none of the flags in master
errrors, i.e. *_MstrErrSta are FALSE.
*_NewErrLogSta BOOL R Error log con-
tains new
errors
The Error log contains new errors bit indicates
new errors in the error log since the last time the
error log was cleared or read.
TRUE:
If the error log contains one or more new errors.
FALSE:
Indicates the error log is cleared or read.
*_ParamTxSta BOOL R Parameter
transfer In
progress
TRUE:
Indicates transfer of Configuration and setup data
•
from the PC to the Unit’s internal volatile mem-
ory, or
• from the Unit’s internal volatile memory to non-
volatile memory, or
• from the flash card to the Unit’s internal volatile
memory.
During this transfer no other transfer of data can
be started in parallel.
FALSE:
Indicates that no Configuration data transfer is in
progress.
*_ParamStorErr BOOL R Local parame-
ter storage
error
TRUE:
Indicates an error occurred during an attempt to
write the Configuration and setup data to internal
non-volatile memory.
If the error occurred, the data in the non-volatile
memory may be corrupted and a new Configura-
tion must be downloaded to the Unit.
FALSE:
Indicates that the Configuration and setup data
has been transferred to the non-volatile memory
successfully.