SIE_G120_VFD
SINAMICS G120 PROFIdrive telegram driver — STW1 assembly with correct active-low OFF2/OFF3, ZSW1 decode with all six inverted status bits, and a percent setpoint clamped inside the signed 16-bit word.
When to use it
Use SIE_G120_VFD when a Siemens SINAMICS G120 with a CU240B-2 or CU240E-2 control unit is controlled over PROFINET or PROFIBUS using standard telegram 1 (STW1 / NSOLL_A out, ZSW1 / NIST_A in), and the control word bit mapping and the PROFIdrive switch-on sequence should come from the manufacturer's published function diagrams rather than be re-derived on site.
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 | — |
| RUN | BOOL | — |
| DIR | BOOL | — |
| SPD_REF_PCT | REAL | % of p2000 |
| REF_MAX_PCT | REAL | % of p2000 |
| COAST_STOP | BOOL | — |
| QUICK_STOP | BOOL | — |
| FAULT_RST | BOOL | — |
| STATUS_WORD | WORD | — |
| NIST_A | INT | — |
| COMM_OK | BOOL | — |
| COMM_TMO | TIME | — |
| START_TMO | TIME | — |
| ACK_WIDTH | TIME | — |
Outputs
| Port | Type | Unit |
|---|---|---|
| CTRL_WORD | WORD | — |
| NSOLL_A | INT | — |
| SPD_ACT_PCT | REAL | % of p2000 |
| STATE | INT | — |
| READY | BOOL | — |
| READY_TO_OP | BOOL | — |
| RUNNING | BOOL | — |
| AT_SPEED | BOOL | — |
| SW_ON_INHIBIT | BOOL | — |
| PLC_CONTROL | BOOL | — |
| DIR_ACT_FWD | BOOL | — |
| BRAKE_OPEN | BOOL | — |
| COAST_ACTIVE | BOOL | — |
| QSTOP_ACTIVE | BOOL | — |
| AT_LIMIT | BOOL | — |
| DRV_FAULT | BOOL | — |
| DRV_ALARM | BOOL | — |
| ALM_SPEED_DEV | BOOL | — |
| ALM_MTR_OVERTEMP | BOOL | — |
| ALM_PU_OVERTEMP | BOOL | — |
| ALM_COMM | BOOL | — |
| ALM_START_FAIL | BOOL | — |
| ALM_REF_CLAMP | BOOL | — |
Supervised control write
SIE_G120_VFD 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
- 16
- Simulated scans
- 234
- 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
Download SIE_G120_VFD — free
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