STN EN IEC 61158-4-21
| Name: | STN EN IEC 61158-4-21 |
| Validity: | Valid |
| Number of pages: | 116 |
| Language: |
EN
|
| Paper: | 35,00€ |
| Electronic version |
a) Only read (without ability to print and copy)
31,50€ b) Without ability to print, with ability to copy (printscreen) 35,00€ c) With ability to print and copy (printscreen) 45,50€ |
| Slovak title | Priemyselné komunikačné siete. Špecifikácie prevádzkových zberníc. Časť 4-21: Špecifikácia protokolu údajovej vrstvy. Prvky typu 21 |
| English title | Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements |
| Release Date: | 01. 10. 2019 |
| Date of withdrawal: | 02. 05. 2026 |
| ICS: | 25.040.40, 35.100.20, 35.110 |
| Sorting character/National clasification code | 18 4020 |
| Level of incorporation: | idt IEC 61158-4-21:2019, idt EN IEC 61158-4-21:2019 |
| Official Journal | 09/19 |
| Amendments | |
| Replaced by: | STN EN IEC 61158-4-21:2023-08 (18 4020) |
| Repleces: | STN EN 61158-4-21:2012-12 (18 4020) |
| Note in Official Journal: | |
| Subject of the standard: | IEC 61158-4-21:2019 describes procedures for the timely transfer of data and control information from one data link user entity to a peer user entity, and among the data link entities forming the distributed data link service provider and procedures for giving communication opportunities based on standard ISO/IEC 8802-3 MAC, with provisions for nodes to be added or removed during normal operation; structure of the fieldbus data link protocol data units (DLPDUs) used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units. This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. |
| Preview: | Náhľad normy (PDF) |