A4 Telecontrol Interfaces
A4.1 Telecontrol Interface per EN 60870-5-101 or IEC 870-5-101
(Companion Standard)
This section incorporates Section 8 of EN 60870-5-101 (1996), which includes a
general definition of the telecontrol interface for substation control systems.
A4.1.1 Interoperability
This application-based standard (companion standard) specifies parameter sets
and other options from which subsets are to be selected in order to implement
specific telecontrol systems. Certain parameters such as the number of bytes
(octets) in the COMMON ADDRESS of the ASDU are mutually exclusive. This
means that only one value of the defined parameter is allowed per system. Other
parameters, such as the listed set of different process information in the
command and monitor direction, permit definition of the total number or of
subsets that are suitable for the given application. This section combines the
parameters given in the previous sections in order to facilitate an appropriate
selection for a specific application. If a system is made up of several system
components supplied by different manufacturers, then it is necessary for all
partners to agree on the selected parameters.
The boxes for the selected parameters should be checked [see National Preface
of EN 60870-5-101].
The overall definition of a system may also require individual selection of certain
parameters for specific parts of a system such as individual selection of scaling
factors for individually addressable measured values.
A4.1.1.1 Network Configuration (Network-Specific Parameters)
[✓] Point-to-point configuration [✓] Multipoint-party line configuration
[✓] Multiple point-to-point configuration [ ] Multipoint-star configuration
P634
P634/EN M/R-42-A // P634‑311‑653 A4-1
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