BS EN 61158-3. Industrial communication networks. Fieldbus specifications. Part 3-1. Data-link layer service definition. Type 1 elements. Part 3-2. Data-link layer service definition. Type 2 elements. Part 3-3. Data-link layer service definition. Type 3 elements. Part 3-4. Data-link layer service definition. Type 4 elements. Part 3-12. Data-link layer service definition. Type 12 elements. Part 3-13. Data-link layer service definition. Type 13 elements. Part 3-14. Data-link layer service definit"