NEC X754HB Manual

Also see for X754HB: Installation guide User manual

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NEC X754HB Manual Manual pdf 76 page image

(76/139)12.2 Model Name ReadThis command is used in order to read the Model Name.1) The controller requests the monitor to read Model Name.Header Message Check code DelimiterSOH-'0'-Monitor ID-'0'-'A'-'0'-'6'STX-'C'-'2'-'1'-'7'-ETX BCC CRHeaderSOH (01h): Start of Header'0' (30h): ReservedMonitor ID: Specify the Monitor ID which you want to get Model Name.Ex.) If Monitor ID is '1', specify 'A'.'0' (30h): Message sender is the controller.'A' (41h): Message type is "Command".'0'-'6'(30h, 36h): Message lengthMessageSTX (02h): Start of Message'C'-'2'-'1'-'7' (43h, 32h, 31h, 37h): Model Name commandETX (03h): End of MessageCheck codeBCC: Block Check CodeRefer to the section 4.3 “Check code” for a BCC calculation.DelimiterCR (0Dh): End of packet2) The monitor replies the model name data to the controller.Header Message Check code DelimiterSOH-'0'-'0'-Monitor ID-'B'-N-NSTX-'C'-'3'-'1'-'7'-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 returned from the monitor at a time is32bytes.Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h).MessageSTX (02h): Start of Message'C'-'3'-'1'-'7' (43h, 33h, 31h, 37h): Model Name reply CommandData(0) -Data(1)----Data(n):Model nameØ The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h).Ex.) Foe example when receiving Model Name data 35h 30h 33h 34h 33h 30h 33h 33hStep1: Model Name data is encoded character string.Example:35h 30h 33h 34h 33h 30h 33h 33h -> '5','0','3','4','3','0','3','3'Step2: Decode pairs of ASCII characters to hexadecimal values.Example:'5','0','3','4','3','0','3','3' -> 50h 34h 30h 33hStep3: Byte data represents the ASCII string data.Example:50h 34h 30h 33h -> "P403"Result: Model Name is "P403".Note: No null termination character is sent.ETX (03h): End of MessageCheck codeBCC: Block Check Code