AccuEnergy Accuvim II, Руководство пользователя

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Ethernet Modual
2. Format of communication
Explanation of frame
Transaction
identifier hi
Transaction
identifier lo
Protocol
identifier hi
Protocol
identifier lo
Length hi Length lo
Unit
identifier
00H 00H 00H 00H 00H 06H 01H
Fun Data start reg hi Data start reg lo Data #of regs hi Data #of regs lo
03H 40H 00H 00H 48H
Table 3-4
As shown in table 3-4 the meaning of each abbreviated word is:
Transaction identifier hi: Transaction Identifier high byte
Transaction identifier lo: Transaction Identifier low byte
Protocol identifier hi: Protocol Identifier high byte
Protocol identifier lo: Protocol Identifier low byte
Length hi: length high byte
Length lo: length low byte
Unit identifier: slave address
Fun: function code
Data start reg hi: start register address high byte
Data start reg lo: start register address low byte
Data #of regs hi: number of register high byte
Data #of regs lo: number of register low byte