BS EN 61784-3-2:2017 Industrial communication networks. Profiles Functional safety fieldbuses. Additional specifications for CPF 2

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

Link: BS EN 61784-3-2:2017 Industrial communication networks. Profiles Functional safety fieldbuses. Additional specifications for CPF 2
Source: BSI Standards