BS EN IEC 61158-3-12:2019 Industrial communication networks. Fieldbus specifications Data-link layer service definition. Type 12 elements

Interfaces (data processing)
Communication procedures
Open systems interconnection
Fieldbus
Data link layer (OSI)
Automatic control systems
Data transmission
Communication networks
Bus networks
Computer networks
Process control
Industrial

Link: BS EN IEC 61158-3-12:2019 Industrial communication networks. Fieldbus specifications Data-link layer service definition. Type 12 elements
Source: BSI Standards