Omron NX701-1620 - Db_Close (Close DB Connection

Appendix A
A-9
A
NJ/NX-series Database Connection CPU Units User’s Manual (W527)
DB_Close (Close DB Connection)
The DB_Close instruction closes the connection with the DB established by a DB_Connect (Establish
DB Connection) instruction.
Instruction
Name
FB/FUN
Graphic expression
ST expression
DB_Close Close DB
Connection
FB
DB_Close_instance (Execute,
DBConnection, Done, Busy, Error,
ErrorID);
Note The DB_Close_instance is an instance of DB_Close instruction, which is declared as a variable.
Variables
Input Variables
Name
Meaning
Data type
Valid range
Unit
Default
Description
Execute
Execute
BOOL
TRUE or FALSE
---
FALSE
Specify the execution condition.
DBConnection DB
Connection
DWORD
16#00000000 to
16#FFFFFFFF
--- --- Specify the DB Connection established
by a DB_Connect instruction.
Output Variables
Name
Meaning
Data type
Valid range
Unit
Description
Done Done BOOL TRUE or
FALSE
--- TRUE when the instruction is normally
completed.
Busy Executing BOOL TRUE or
FALSE
--- TRUE when the instruction is being executed.
Error Error BOOL TRUE or
FALSE
--- TRUE when the instruction is terminated due to
an error.
ErrorID Error Code WORD 16#0000 to
16#FFFF
--- Contains the error code when an error occurs.
Related System-defined Variables
Name
Meaning
Data type
Description
_EIP_EtnOnlineSta Online BOOL Status of the communications function of
the built-in EtherNet/IP port.
TRUE: Can be used.
FALSE: Cannot be used.
DB_Close
DBConnection
Busy
Execute
Done
Error
ErrorID
DB_Close_instance
DB_Close (Close DB Connection)
DB Connection Instructions