NF C46-604-5-21*NF EN 61158-5-21:2013 Industrial communication networks - Fieldbus specifications - Part 5-21 : application layer service definition - Type 21 elements
2013NF C46-604-5-21*NF EN 61158-5-21:2013 Industrial communication networks - Fieldbus specifications - Part 5-21 : application layer service definition - Type 21 elements