Normally open contact XIC
Passes power while the tag is on.
Global.StartPBXIC
| Tag | After two scans |
|---|---|
| StartPB | 1 |
How it works
Passes power while its BOOL operand is true; blocks it while the operand is false.
How it's used
Use XIC where a rung needs a BOOL to be on: a button, a sensor, a status bit.
Global.StartPBXIC
Global.MotorXIC
Global.StopPBXIO
Global.MotorOTE
| Tag | Value |
|---|---|
| StartPB | 0 |
| StopPB | 0 |
| Motor | 1 |
StartPB was pressed and released. The XIC on Motor keeps the rung true.
Operands
| Operand | Data type | Read or write |
|---|---|---|
| Source | BOOL | Reads |
Common mistakes
- Choosing it from the button typeXIC is about the tag, not the button. It passes power while the tag is on.
Learn it in a lesson
- The PLC scan cycleBeginner · 20 min
- Series and parallel contactsBeginner · 20 min