1. BS EN 61158-4-21:2012 Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements

2. BS EN 61158-4-22:2014 Industrial communication networks - Fieldbus specifications - Part 4-22: Data-link layer protocol specification - Type 22 elements

3. BS EN 61158-4-24:2014 Industrial communication networks - Fieldbus specifications - Part 4-24: Data-link layer protocol specification - Type 24 elements

4. BS EN 61158-5-10:2014 Industrial communication networks - Fieldbus specifications - Part 5-10: Application layer service definition - Type 10 elements

5. BS EN 61158-5-11:2008 Industrial communication networks -Fieldbus specifications - Part 5-11: Application layer service definition - Type 11 elements

6. BS EN 61158-5-12:2014 Industrial communication networks -Fieldbus specifications - Part 5-12: Application layer service definition - Type 12 elements

7. BS EN 61158-5-13:2014 Industrial communication networks -Fieldbus specifications - Part 5-13: Application layer service definition - Type 13 elements

8. BS EN 61158-5-14:2014 Industrial communication networks -fieldbus specifications - Part 5-14:Application layer service definition - Type 14 elements

9. BS EN 61158-5-15:2012 Industrial communication networks - Fieldbus specifications - Part 5-15: Application layer service definition - Type 15 elements

10. BS EN 61158-5-16:2008 Industrial communication networks -fieldbus specifications - Part 5-16: Application layer service definition - Type 16 elements