NEC LCD3215 - MultiSync - 32" LCD Flat Panel Display Control Manual

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NEC LCD3215 - MultiSync - 32" LCD Flat Panel Display Control Manual Manual pdf 6 page image

(6/37)5. Message type5.1 Get current Parameter from a monitor.Send this message when you want to get the status of a monitor.For the status that you want to get, specify the “OP code page” the “OP code”, refer to “AppendixA. Operation code table”.1stbyte) STX: Start of MessageASCII STX (02h)2nd-3rdbytes) OP code page: Operation code page.Specify the “OP code page” for the control which you want to get the status.Refer to “Appendix A Operation code table” for each item.OP code page data must be encoded to ASCII characters.Ex.) The byte data 02h must be encoded to ASCII characters '0' and '2' (30h and 32h).OP code page 02h -> OP code page (Hi) = ASCII '0' (30h)OP code page (Lo) = ASCII '2' (32h)Refer to Operation code table. (Appendix A)4th–5thbytes) OP code: Operation codeRefer to “Appendix A Operation code table” for each item.OP code data must be encoded to ASCII characters.Ex.) The byte data 3Ah must be encoded to ASCII characters '3' and 'A' (33h and 41h).OP code 3Ah -> OP code (Hi) = ASCII '3' (33h)OP code (Lo) = ASCII 'A' (41h)Refer to Operation code table.6thbyte) ETX: End of MessageASCII ETX (03h)5.2 "Get parameter" replyLCD3215/LCD4215 replies with a current value and the status of the requested item (operation code).1stbyte) STX: Start of MessageASCII STX (02h)2nd-3rdbytes) Result code.OP code page OP codeSTX Hi Lo Hi Lo ETX1st 2nd-3rd 4th–5th 6thResult OP code page OP code Type Max value Current ValueSTX Hi Lo Hi Lo Hi Lo Hi Lo MSB LSB MSB LSB ETX1st 2nd-3rd 4th–5th 6th –7th 8th -9th 10th -13th 14th -17th 18th