STATION_INTERLOCK
Per-station cycle permissive with an ordered blocking reason, a guard-breach seal-in and supervision that the station actually stopped.
When to use it
Use STATION_INTERLOCK when an assembly or packaging station may only cycle when its guard is closed, its utilities are proven, the upstream station has released the part and the part is correctly seated, and the machine has to say WHY it will not go.
Interface
The published port signature. This is the whole of what the block exposes to your program — the implementation body is not shown here and ships with the download.
Inputs
| Port | Type |
|---|---|
| ENABLE | BOOL |
| AUTO | BOOL |
| PREV_OK | BOOL |
| GUARD_OK | BOOL |
| PART_OK | BOOL |
| AIR_OK | BOOL |
| CYCLE_ACTIVE | BOOL |
| STOP_TMO | TIME |
| ACK | BOOL |
Outputs
| Port | Type |
|---|---|
| PERMIT | BOOL |
| BLOCKED | BOOL |
| READY | BOOL |
| BLOCK_CODE | USINT |
| ALM_GUARD_BREACH | BOOL |
| ALM_STOP_FAIL | BOOL |
| BLOCKS | UDINT |
| ALM_CFG_ERR | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Supervised control write
STATION_INTERLOCK commands a real actuator. It is written to sit underneath your own interlock, permissive and protection logic — not to replace it. Commission it as you would any control block you wrote yourself.
Validation evidence
- Tests
- 9
- Simulated scans
- 70
- Simulator
- v0.1.0
Complete IEC 61131-3 implementation with a published test suite that runs on the vplant simulator. The counts above are that suite, executed on this build.
- Conforms to IEC 61131-3
- Conforms to IEC 61499
Download STATION_INTERLOCK — free
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