Meanings Of Error Status Bits - Omron NJ501-1 Series User Manual

A-6-4

Meanings of Error Status Bits

The meanings of the individual bits in the following error status are the same.
• _ErrSta (Controller Error Status)
• _PLC_ErrSta (PLC Function Module Error Status)
• _CJB_ErrSta (I/O Bus Error Status)
• _CJB_MstrErrSta (I/O Bus Master Error Status)
• _CJB_UnitErrSta (I/O Bus Unit Error Status)
The meaning of the bits are shown in the following table.
However, do not use the following variables in the user program:_ErrSta (Controller Error Status),
_CJB_ErrSta (I/O Bus Error Status), _CJB_MstrErrSta (I/O Bus Master Error Status), and
_CJB_UnitErrSta (I/O Bus Master Unit Status). There may be a delay in updating them and concur-
rency problems in relation to the error status of the function module.
Use these variables only to access status through communications from an external device.
15 14
Bit:
WORD
Bit
15 Master-detected error: This bit indicates whether the master detected a Controller error in the Unit/slave for the
error status of the Controller error.
TRUE: The master detected a Controller error.
FALSE: The master has not detected a Controller error.
(Valid for _CJB_U_ErrSta and _EC_SlvErrTbl.)
14 Collective slave error status: This bit indicates if a Controller error was detected for levels (e.g., a Unit, slave,
axis, or axes group) that are lower than the event source (i.e., for a function module).
TRUE: A Controller error has occurred at a lower level.
FALSE: A Controller error has not occurred at a lower level.
(Valid for _CJB_ErrSta, _MC_ErrSta, and _EC_ErrSta.)
8 to 13 Reserved.
7 This bit indicates whether a major fault level Controller error has occurred.
TRUE: A major fault level Controller error has occurred.
FALSE: A major fault level Controller error has not occurred.
6 This bit indicates whether a partial fault level Controller error has occurred.
TRUE: A partial fault level Controller error has occurred.
FALSE: A partial fault level Controller error has not occurred.
5 This bit indicates whether a minor fault level Controller error has occurred.
TRUE: A minor fault level Controller error has occurred.
FALSE: A minor fault level Controller error has not occurred.
4 This bit indicates whether an observation level Controller error has occurred.
TRUE: An observation level Controller error has occurred.
FALSE: An observation level Controller error has not occurred.
0 to 3 Reserved.
NJ-series CPU Unit Hardware User's Manual (W500)
13 12 11 10 9 8 7 6 5 4 3 2
Meaning
Appendices
1 0
A-111