GE 869, Руководство по связи

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CHAPTER 6: IEC 60870-5-104 INTEROPERABILITY
869 MOTOR PROTECTION SYSTEM – COMMUNICATIONS GUIDE 6-3
GROUPS OF DATA
The data is organized into groups in order to provide values when the controlling station
requests them by a general or group interrogation.
Group 1 is set by the 96 Single Points (M_SP).
Group 2 is set by the 32 Measured values (M_ME).
Group 3 is set by the 32 Measured thresholds (P_ME).
These 96 Single Points and 32 Measured Values are also sent as a response to a General
Interrogation.
The Integrated Totals (M_IT) has its own Counter Group 1, and it is sent as a response to a
General Request Counter.
Interoperability
This document is adapted from the IEC 60870-5-104 standard. For this section the boxes
indicate the following:
⊠
– used in the standard direction;
□
– not used.
IEC 60870-5-104 Interoperability Document
System or device :
□
System definition.
□
Controlling station definition (master).
⊠
Controlled station definition (slave).
Application layer :Transmission mode for application data:Mode 1 (least significant octet
first), as defined in Clause 4.10 of IEC 60870-5-4, is used exclusively in this companion
standard.Common address of ASDU:
⊠
Two octets.Information object address:
⊠
Three octets.
⊠
Structured
⊠
Unstructured
Cause of transmission:
⊠
Two octets (with originator address). Originator address is set to zero if not
used.Maximum length of APDU.253 in both directions (the maximum length is a fixed
system parameter).Selection of standard ASDUs.For the following lists, the boxes indicate
the following:
⊠
– used in standard direction;
□
– not used.
Process information in monitor direction:
Table 6-1: Process information in monitor direction
Number / description Mnemonic
⊠
<1> := Single-point information M_SP_NA_1
□
<3> := Double-point information M_DP_NA_1
□
<5> := Step position information M_ST_NA_1
□
<7> := Bitstring of 32 bits M_BO_NA_1
□
<9> := Measured value, normalized value M_ME_NA_1
⊠
<11> := Measured value, scaled value M_ME_NB_1
□
<13> := Measured value, short floating point value M_ME_NC_1
⊠
<15> := Integrated totals M_IT_NA_1
□
<20> := Packed single-point information with status change detection M_SP_NA_1
□
<21> := Measured value, normalized value without quantity descriptor M_ME_ND_1
⊠
<30> := Single-point information with time tag CP56Time2a M_SP_TB_1