2014EN 61158-2:2014 Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition
2010EN 61158-2:2010 Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition
2008EN 61158-2:2008 Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition [: CENELEC EN 61491]
2004EN 61158-2:2004 Digital data communications for measurement and control - Fieldbus for use in industrial control systems Part 2: Physical layer specification and service definition
1994EN 61158-2:1994 Fieldbus Standard for Use in Industrial Control Systems Part 2: Physical Layer Specification and Service Definition