GE L60, Instruction Manual, Page: 462 / 498

D-2 L60 Line Phase Comparison Relay GE Multilin
D.1 PROTOCOL APPENDIX D
D
When using an unbalanced link layer, the following ADSU types are returned in class 2 messages (low priority) with the
indicated causes of transmission:
The standard assignment of ADSUs to class 2 messages is used as follows:
A special assignment of ADSUs to class 2 messages is used as follows:
5. 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
stanadard.
Common Address of ADSU:
One Octet
Two Octets
Information Object Address:
One Octet Structured
Two Octets Unstructured
Three Octets
Cause of Transmission:
One Octet
Two Octets (with originator address). Originator address is set to zero if not used.
Maximum Length of APDU: 253 (the maximum length may be reduced by the system.
Selection of standard ASDUs:
For the following lists, the boxes indicate the following: – used in standard direction; – not used; – cannot be
selected in IEC 60870-5-104 standard.
Process information in monitor direction
<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
<5> := Step position information M_ST_NA_1
<6> := Step position information with time tag M_ST_TA_1
<7> := Bitstring of 32 bits M_BO_NA_1
<8> := Bitstring of 32 bits with time tag M_BO_TA_1
<9> := Measured value, normalized value M_ME_NA_1
<10> := Measured value, normalized value with time tag M_NE_TA_1
<11> := Measured value, scaled value M_ME_NB_1
<12> := Measured value, scaled value with time tag M_NE_TB_1
<13> := Measured value, short floating point value M_ME_NC_1
<14> := Measured value, short floating point value with time tag M_NE_TC_1
<15> := Integrated totals M_IT_NA_1
<16> := Integrated totals with time tag M_IT_TA_1
<17> := Event of protection equipment with time tag M_EP_TA_1
<18> := Packed start events of protection equipment with time tag M_EP_TB_1
<19> := Packed output circuit information of protection equipment with time tag M_EP_TC_1
<20> := Packed single-point information with status change detection M_SP_NA_1
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