Omron NX701-1620 User Manual

Appendix A
A-86
NJ/NX-series Database Connection CPU Units User’s Manual (W527)
Sample Programming
This section gives sample programming for shutting down the DB Connection Service when the trigger
variable changes to TRUE.
Ladder Diagram
 Main Variables
Name
Data type
Initial value
Comment
DB_Shutdown_instance
DB_Shutdown
---
Instance of DB_Shutdown instruction
Trigger BOOL FALSE Variable used as a trigger for shutting down the DB Connection
Service
Shutdown_OK BOOL FALSE This variable changes to TRUE when the DB_Shutdown instruction
is completed normally.
 Sample Programming
- Shut down the DB Connection Service.
Shut down the DB Connection Service.
Trigger
DB_Shutdown_instance
Execute
DB_Shutdown
Done
Busy
Error
ErrorID
When the instruction is normally completed, change the variable Shutdown_OK to TRUE.
DB_Shutdown_instance.Done
Shutdown_OK
S
Structured Text (ST)
 Main Variables
Name
Data type
Initial value
Comment
DB_Shutdown_instance
DB_Shutdown
---
Instance of DB_Shutdown instruction
Trigger BOOL FALSE Variable used as a trigger for shutting down the DB Connection
Service
LastTrigger
BOOL
FALSE
Variable to retain the trigger status of the previous execution
Operating BOOL FALSE Shutting down the DB Connection Service is executed when this
variable is TRUE.
OperatingStart
BOOL
FALSE
The initialization processing is executed when this variable is TRUE.
ShutdownOK BOOL FALSE This variable changes to TRUE when the DB_Shutdown instruction
is completed normally.

Omron NX701-1620 Specifications

General

Brand	Omron
Model	NX701-1620
Category	Controller
Language	English