AXIS_HOME
PLCopen-style axis homing: back off the reference, seek at creep speed, latch the zero and settle.
When to use it
Use AXIS_HOME when an incremental-feedback axis has to establish its machine zero against a home switch or encoder index before any absolute move is allowed, and the search has to give up rather than run into a hard stop.
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 | Unit |
|---|---|---|
| ENABLE | BOOL | — |
| EXECUTE | BOOL | — |
| ABORT | BOOL | — |
| AXIS | UINT | — |
| VEL | REAL | u/s |
| HOME_DIR_NEG | BOOL | — |
| HOME_SW | BOOL | — |
| HOME_OFFSET | REAL | u |
| SEEK_LIMIT | REAL | u |
| HOME_TMO | TIME | — |
| HOME_BACKOFF | REAL | u |
| SETTLE | TIME | — |
| ACT_POS | REAL | u |
| POS_OK | BOOL | — |
| AXIS_READY | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| HOMED | BOOL | — |
| POS_REF | REAL | u |
| CMD_VEL | REAL | u/s |
| CMD_AXIS | UINT | — |
| DONE | BOOL | — |
| BUSY | BOOL | — |
| ACTIVE | BOOL | — |
| COMMAND_ABORTED | BOOL | — |
| ERROR | BOOL | — |
| ERROR_ID | INT | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 10
- Simulated scans
- 95
- 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 AXIS_HOME — free
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