STN EN IEC 61158-3-21
| Name: | STN EN IEC 61158-3-21 |
| Validity: | Valid |
| Number of pages: | 54 |
| Language: |
EN
|
| Paper: | 21,40€ |
| Electronic version |
a) Only read (without ability to print and copy)
19,26€ b) Without ability to print, with ability to copy (printscreen) 21,40€ c) With ability to print and copy (printscreen) 27,82€ |
| Slovak title | Priemyselné komunikačné siete. Špecifikácie prevádzkových zberníc. Časť 3-21: Definícia služieb údajovej vrstvy. Prvky typu 21 |
| English title | Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements |
| Release Date: | 01. 10. 2019 |
| Date of withdrawal: | |
| ICS: | 25.040.40, 35.100.20, 35.110 |
| Sorting character/National clasification code | 18 4020 |
| Level of incorporation: | idt IEC 61158-3-21:2019, idt EN IEC 61158-3-21:2019 |
| Official Journal | 09/19 |
| Amendments | |
| Replaced by: | |
| Repleces: | STN EN 61158-3-21:2012-12 (18 4020) |
| Note in Official Journal: | |
| Subject of the standard: | This part of IEC 61158 provides common elements for basic time-critical messaging communications between devices in an automation environment. The term “time-critical” is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life. |
| Preview: | Náhľad normy (PDF) |