ProSoft Technology PLX8X-MNET-61850 - Manual (Page 163)

PLX8x-MNET-61850 ♦ Communication Gateway Reference
Modbus TCP/IP to IEC 61850 User Manual
ProSoft Technology, Inc. Page 163 of 228
May 14, 2014
PACKED LIST
PACKED LIST is MMS Bit-string of variable length. Bit 0 is the leftmost (most
significant) bit of the first octet. Bit 7 is the rightmost (least significant) bit of the
first octet. Bit 8 is the leftmost (most significant) bit of the second octet. Bit 15 is
the rightmost (least significant) bit of the second octet, etc. Exceptions to this are
time and quality:
(This table has been taken directly from the IEC 61850 Standard document)
Bit 0 will be the most significant bit of octet 7. Bit 7 will be the least significant bit
of octet 7. The octet format will be (using ASN.1 bstring notation)
EntryTime
EntryTime is mapped as BINARY-TIME, and it will be six octets.
TriggerConditions
TriggerConditions, such as those used in BRCB, are encoded as a PACKED
LIST, yet bit 0 is reserved.