CHAPTER 6: IEC 60870-5-104 INTEROPERABILITY
869 MOTOR PROTECTION SYSTEM – COMMUNICATIONS GUIDE 6-5
Table 6-5: Parameter in control direction
Table 6-6: File transfer
Type identifier and cause of transmission assignments (station-specific parameters) are
shown in the following tables. In these tables, shaded boxes (░) are not required, black
boxes (█) are not permitted in the companion standard, empty cells indicate the functions
or ASDU are not used, and a cross (╳) indicates availability only in the standard direction.
Table 6-7: Cause of transmission numbers
Number / description Mnemonic
□ <110> := Parameter of measured value, normalized value PE_ME_NA_1
⊠ <111> := Parameter of measured value, scaled value PE_ME_NB_1
□ <112> := Parameter of measured value, short floating point value PE_ME_NC_1
□ <113> := Parameter activation PE_AC_NA_1
Number / description Mnemonic
□ <120> := File ready F_FR_NA_1
□ <121> := Section ready F_SR_NA_1
□ <122> := Call directory, select file, call file, call section F_SC_NA_1
□ <123> := Last section, last segment F_LS_NA_1
□ <124> := Ack file, ack section F_AF_NA_1
□ <125> := Segment F_SG_NA_1
□ <126> := Directory (blank or X, available only in monitor [standard] direction) F_DR_TA_1
□ <127> := Query log - Request archive file F_SC_NB_1
Number Cause of transmission
1 Periodic, cyclic
2 Background scan
3 Spontaneous
4 Initialized
5 Request or requested
6 Activation
7 Activation confirmation
8 Deactivation
9 Deactivation confirmation
10 Activation termination
11 Return information caused by a remote command
12 Return information caused by a local command
13 File transfer
20 Interrogated by station interrogation
21 to 36 Interrogated by group <number> interrogation
37 Requested by general counter request
38 to 41 Requested by group <number> counter request
44 Unknown type of identification
45 Unknown cause of transmission
46 Unknown command address of ASDU
47 Unknown information object address
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