BS EN IEC 61158-3-21:2019 Industrial communication networks. Fieldbus specifications Data-link layer service definition. Type 21 elements

Data processing
Computer networks
Local area networks
Process control
Automatic control systems
Real-time systems
Data circuit-terminating equipment
Data transmission
Industrial
Data transfer
CSMA/CD networks

Link: BS EN IEC 61158-3-21:2019 Industrial communication networks. Fieldbus specifications Data-link layer service definition. Type 21 elements
Source: BSI Standards

BS EN IEC 61158-4-3:2019 Industrial communication networks. Fieldbus specifications Data-link layer protocol specification. Type 3 elements

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

Link: BS EN IEC 61158-4-3:2019 Industrial communication networks. Fieldbus specifications Data-link layer protocol specification. Type 3 elements
Source: BSI Standards

BS EN IEC 61158-4-19:2019 Industrial communication networks. Fieldbus specifications Data-link layer protocol specification. Type 19 elements

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

Link: BS EN IEC 61158-4-19:2019 Industrial communication networks. Fieldbus specifications Data-link layer protocol specification. Type 19 elements
Source: BSI Standards

IEC TR 61189-5-506:2019 Test methods for electrical materials, printed boards and other interconnection structures and assemblies General test methods for materials and assemblies. An intercomparison evaluation to implement the use of fine-pitch test structures for surface insulation resistance (SIR) testing of solder fluxes in accordance with IEC 61189-5-501

Soldering fluxes
Evaluation
Structures
Printing board
Test methods

Link: IEC TR 61189-5-506:2019 Test methods for electrical materials, printed boards and other interconnection structures and assemblies General test methods for materials and assemblies. An intercomparison evaluation to implement the use of fine-pitch test structures for surface insulation resistance (SIR) testing of solder fluxes in accordance with IEC 61189-5-501
Source: BSI Standards

BS EN IEC 61158-4-12:2019 Industrial communication networks. Fieldbus specifications Data-link layer protocol specification. Type 12 elements

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

Link: BS EN IEC 61158-4-12:2019 Industrial communication networks. Fieldbus specifications Data-link layer protocol specification. Type 12 elements
Source: BSI Standards