RS
Reset-dominant bistable — with both inputs asserted, RESET wins.
When to use it
Use RS when a latch must always be clearable, and a simultaneous set and reset must resolve as RESET — mode latches, permissives that an operator must be able to drop.
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 |
|---|---|
| S | BOOL |
| R1 | BOOL |
Outputs
| Port | Type |
|---|---|
| Q1 | BOOL |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 3
- Simulated scans
- 8
- 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 RS — 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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