Type identification Cause of transmission
4.5 Application layer
Transmission mode for application data
Mode 1 (Least significant octet first), as defined in 4.10 of IEC 60870-5-4, is used
exclusively in this companion standard.
Common address of ASDU
(System-specific parameter, mark all used configurations with an “X“.)
One octet Two octets
Information object address
(System-specific parameter, mark all used configurations with an “X“.)
One octet Structured
Two octets Unstructured
Three octets
Cause of transmission
(System-specific parameter, mark all used configurations with an “X“.)
One octet Two octets (with originator address). Originator ad-
dress is set to zero if not used
Selection of standard ASDUs
Process information in monitor direction
(Station-specific parameter, mark each Type ID with an “X“ if it is only used in the
standard direction, “R“ if only used in the reverse direction, and “B“ if used in both
directions.)
<1>:= Single-point information M_SP_NA_1
<2>:= Single-point information with time tag M_SP_TA_1
<3>:= Double-point information M_DP_NA_1
<4>:= Double-point information with time tag M_DP_TA_1
Table continues on the next page
2NGA001859 A IEC 60870-5-104 interoperability
REX615
IEC 60870-5-104 Communication Protocol Manual
37
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