Iec60870-5-101 Introduction - Siemens 7SR224 Technical Manual

5.4

IEC60870-5-101 Introduction

This section describes the IEC 60870-5-101 protocol implementation in the relays.
PC acts as the master in the system with the relay operating as a slave responding to the master's commands.
This protocol can be set to use any or all of the relays hardware interfaces (USB, Fibre Optic, RS232 and RS485).
Cause of Transmission
Shaded boxes are not required.
Blank = function or ASDU is not used.
Mark type identification/cause of transmission combinations:
"X" if used only in the standard direction
The cause of transmission (COT) for each information object type is listed below.
<1> M_SP_NA_1
<2> M_SP_TA_1
<3> M_DP_NA_1
<4> M_DP_TA_1
<5> M_ST_NA_1
<6> M_ST_TA_1
<7> M_BO_NA_1
<8> M_BO_TA_1
<9> M_ME_NA_1
<10> M_ME_TA_1
<11> M_ME_NB_1
<12> M_ME_TB_1
<13> M_ME_NC_1
<14> M_ME_TC_1
<15> M_IT_NA_1
<16> M_IT_TA_1
<17> M_EP_TA_1
<18> M_EP_TB_1
<19> M_EP_TC_1
<21> M_ME_ND_1
<30> M_SP_TB_1
<31> M_DP_TB_1
©2010 Siemens Protection Devices Limited
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7SR224 Argus Data Comms
The control system or local
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