NEC MultiSync V422 Control Manual

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NEC MultiSync V422 Control Manual Manual pdf 41 page image

(41/71)8.2 Asset Data writeThis command is used in order to write Asset Data.1) The controller requests the monitor to write Asset data.Header Message Check code DelimiterSOH-'0'-Monitor ID-'0'-'A'-N-N STX-'C'-'0'-'0'-'E'-'0'-'0'-Data(0)-Data(1)---Data(N)-ETXBCC CRHeaderSOH (01h): Start Of Header'0' (30h): ReservedMonitor ID: Specify the Monitor ID in which you want to write data.Ex.) If Monitor ID is '1', specify 'A'.'0' (30h): Message sender is the controller.'A' (41h): Message type is "Command".N-N: Message lengthNote.) The maximum data length that can be written to the monitor at a time is 32bytes.Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h).MessageSTX (02h): Start of Message'C'-'0'-'0'-'E' (43h, 30h, 30h, 45h): Asset Data writes command'0'-'0'(30h, 30h): Offset address from top of Asset data.00h : Write data from top of the Asset data area.Data(0) –- Data(N): Asset data. The data must be ASCII characters strings.ETX (03h): End of MessageCheck codeBCC: Block Check CodeRefer to the section 4.5 “Check code” for a BCC calculation.DelimiterCR (0Dh): End of packet2) The monitor replies a data for confirmation.Header Message Check code DelimiterSOH-'0'-'0'-Monitor ID-'B'-N-N STX-'0'-'0'-'C'-'0'-'0'-'E'-'0'-'0'-Data(0)-Data(1)---Data(N)-ETXBCC CRHeaderSOH (01h): Start Of Header'0' (30h): Reserved'0' (30h): Message receiver is the controller.Monitor ID: Indicate a replying Monitor ID.Ex.) When this byte is set to 'A', the replying Monitor ID is '1'.'B' (42h): Message type is "Command reply".N-N: Message lengthNote.) The maximum data length that can be written to the monitor at a time is 32bytes.Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (34h and 30h).MessageSTX (02h): Start of Message'0'-'0': Result code. No error.'C'-'0'-'0'-'E' (43h, 30h, 30h, 45h): Asset Data write command'0'-'0'(30h, 30h): Offset address from top of Asset data.00h : Write data into from top of the Asset data area.Data(0) –- Data(N): Asset data. The data must be ASCII characters strings.ETX (03h): End of MessageCheck codeBCC: Block Check CodeRefer to the section 4.5 “Check code” for a BCC calculation.Delimiter