CAM_PROFILE
Cam follower: the slave position is a selectable motion law of the master phase, with a continuous multi-cycle command and a four-knot user table.
When to use it
Use CAM_PROFILE when a follower has to move as a non-linear function of a master position — an indexing table, a flying shear, a rotary filler, a reciprocating knife — and the follower has to run cycle after cycle without a discontinuity at the cam boundary.
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 | — |
| MASTER | UINT | — |
| SLAVE | UINT | — |
| TABLE_ID | UINT | — |
| MASTER_POS | REAL | u |
| MASTER_OK | BOOL | — |
| SLAVE_POS | REAL | u |
| SLAVE_OK | BOOL | — |
| MASTER_PITCH | REAL | u |
| STROKE | REAL | u |
| KNOT_25 | REAL | frac |
| KNOT_50 | REAL | frac |
| KNOT_75 | REAL | frac |
| KNOT_100 | REAL | frac |
| AXIS_READY | BOOL | — |
| ACK | BOOL | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| ACTIVE | BOOL | — |
| CMD_POS | REAL | u |
| CMD_VEL | REAL | u/s |
| CAM_PHASE | REAL | frac |
| CYCLE_COUNT | UDINT | — |
| PHASE_VALID | BOOL | — |
| CMD_AXIS | UINT | — |
| BUSY | BOOL | — |
| COMMAND_ABORTED | BOOL | — |
| ERROR | BOOL | — |
| ERROR_ID | INT | — |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 14
- Simulated scans
- 117
- 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 CAM_PROFILE — free
Create a free Ri Tech account to download the block. You get the Structured Text body, the Rockwell Add-On Instruction (.L5X), the Schneider Control Expert DFB (.XDB), PLCopen XML, the IEC 61499 function block type (.fbt) and the datasheet.
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Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.