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Description: National Power System Control and Communications Standards Committee meetings and three of five recently published in accordance with the national standard DL/T634.5.104: 2002 parameters IEC60870-5-104 Statute choice made the following instructions: do not use 101 Statute link address and a short message (refer to single-byte packets and link acknowledgment packet) do not use a data call two user data. Two 8-bit group, said the public address two 8-bit group, said transmission causes three 8-bit physical address information indicating the group selection of 7 bytes time scale. Defines the start character, application service data length specification unit can transmit a complete application protocol data unit or merely for the purpose of control transfer application protocol control information field.
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IEC60870-5-104 .rtf
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