ESIG_GATE
Electronic-signature gate: identity, re-authentication, meaning and authority proved before a single-use, continuously re-tested signature is applied, and each seal chained to the one before it.
When to use it
Use ESIG_GATE when a GxP action in the control system — a batch release step, a manual addition, a deviation disposition, a set-point override — may only proceed once a named person has signed for it, and the signature has to carry its meaning and be usable exactly once.
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 |
| SIGN_REQ | BOOL |
| USER_REF | STRING |
| MEANING | USINT |
| ACTION | STRING |
| CREDENTIAL_OK | BOOL |
| ROLE_LEVEL | USINT |
| MIN_ROLE | USINT |
| TIME_TRUSTED | BOOL |
| ACTION_DONE | BOOL |
| APPLIED_TMO | TIME |
| ACK | BOOL |
Outputs
| Port | Type |
|---|---|
| SIG_HASH | STRING |
| APPLIED | BOOL |
| SIGNED_USER | STRING |
| SIGNED_ACTION | STRING |
| SIGNED_MEANING | USINT |
| REJECT_CODE | USINT |
| ALM_REJECTED | BOOL |
| SIG_COUNT | UDINT |
| REJ_COUNT | UDINT |
IEC 61499 event interface
EI INIT, REQ·EO INITO, CNF
Validation evidence
- Tests
- 15
- Simulated scans
- 142
- 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 ESIG_GATE — 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.
Every block in the catalogue is free to download, in every format, with no purchase and no card. Browsing needs no account at all; downloading needs a signed-in one, so the block lands in your library and re-downloads whenever you need it.
Source is never published on this page. The implementation is released to a signed-in Ri Tech account — free of charge, but never anonymously.