Appendix A
A-55
A
NJ/NX-series Database Connection CPU Units User’s Manual (W527)
DB_ControlService (Control DB Connection Service)
Related System-defined Variables
System-defined
Valid range Unit Description
_DBC_Status.Idle DB Connection
Service Idle Status
BOOL TRUE or FALSE --- TRUE when the operation status of the DB
Connection Service is Idle. Otherwise,
FALSE.
_DBC_Status.Run DB Connection
Service Running
Status
BOOL TRUE or FALSE --- TRUE when the DB Connection Service is
started in Operation Mode or Test Mode.
FALSE when the DB Connection Service is
_DBC_Status.Test DB Connection
Service Test Mode
Status
BOOL TRUE or FALSE --- TRUE when the DB Connection Service is
started in Test Mode.
FALSE when the DB Connection Service is
_DBC_Status.Shutdown DB Connection
Service Shutdown
BOOL TRUE or FALSE --- TRUE when the operation status of the DB
Connection Service is shutdown. Otherwise,
0400 hex Input Value Out of Range A value that is not defined as an enumerator was specified in the Cmd
041D hex Too Many Instructions Executed at the
More than 32 DB Connection Instructions were executed at the same
1400 hex SD Memory Card Access Failure This instruction was executed with _DBC_CMD_DEBUGLOG_ON
selected in the Cmd input variable when the SD Memory Card was not
1401 hex SD Memory Card Write-protected This instruction was executed with _DBC_CMD_DEBUGLOG_ON
selected in the Cmd input variable when the SD Memory Card was
3001 hex DB Connection Service Run Mode Change
Failed
- This instruction was executed with _DBC_CMD_START_TEST
selected in the Cmd input variable while the service was running in
Operation Mode.
- This instruction was executed with _DBC_CMD_START selected in
the Cmd input variable while the service was running in Test Mode.
- Start of the DB Connection Service was commanded while the DB
Connection Service was being stopped.
3002 hex DB Connection Service Shutdown or
The instruction was executed after the DB Connection Service was
shut down or while the DB Connection Service was being shut down.
3013 hex DB Connection Service Error Stop The instruction was executed while the DB Connection Service was
3015 hex DB Connection Service Initializing The instruction was executed while the initialization processing of the
DB Connection Service was in progress.
DB Connection Instructions