NEC RS-232C manual Readout value is 2s complement

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Readout value is 2's complement.

Temperature [Celsius]		Readout value
Temperature [Celsius]		Binary				Hexadecimal
		Binary				Hexadecimal
+125.0		0000 0000 1111 1010				00FAh
+	25.0	0000	0000	0011	0010	0032h
+	0.5	0000	0000	0000	0001	0001h
0		0000	0000	0000	0000	0000h
-	0.5	1111	1111	1111	1111	FFFFh
-	25.0	1111	1111	1100	1110	FFCEh
-	55.0	1111	1111	1001	0010	FF92h

ETX (03h): End of Message

Check code

BCC: Block Check Code

Refer to the section 4.5 “Check code” for a BCC calculation.

Delimiter

CR (0Dh): End of packet

(25/72)

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Contents External Control 10.1 Application RS-232C Remote control II. Preparation Connectors and wiringLAN control Ascii Communication timingGet Parameter Reply Monitor Communication FormatALL Header block format fixed lengthPage STX Message block formatETX MSB LSB10/72 SOH Check codeDelimiter Get current Parameter from a monitor Message typeGet parameter reply 00h No ErrorETX MSB LSB Set parameterCurrent condition Set parameter replySave Current Settings CommandsGet Timing Report and Timing reply  Send 0730h, 37h as Get Timing Report commandNull Message How to change the Backlight setting IV. Control Commands Typical procedure exampleBCC Message Check code Delimiter Header Message Check code Delimiter SOH-0-Monitor ID-0-E-0-A STX-0-2-7-8-0-0-0-1-ETX SOH-0-Monitor ID-0-C-0-6 STX-0-2-7-9-ETX Readout value is 2s complement Dicom SIM Operation Code OP code TablePosition 00h 20h Left side OP code Parameter Remarks Cod Pag Input Resolution DAh Hdmi SurroundPIP RGB/HVOSD 02h 7Dh None DVI-HD DVI-PCScart IP ON/PROGRESSIVEScreen Mute on Screen Mute OFF MTS Mute Unmute Screen Mute‘SURROUND’ PIP ON/OFFOP code Parameter Remarks Cod Pag PIP Input 02h 73h No mean Power status read Power control procedureCR 0Dh End of packet 37/72 Controller requests the monitor to control monitor power Power controlDelimiter CR 0Dh End of packet 39/72 Asset Data Read Request and reply Asset Data read and writeDelimiter CR 0Dh End of packet 41/72 Asset Data write CR 0Dh End of packet 43/72 Date & Time Read Date & Time read and writeBCC DS-ETX MN Minutes 0-030h, 30h Date & Time Write Check code Delimiter Delimiter CR 0Dh End of packet 48/72 Schedule Read Schedule read and writeB33h, 42h C33h, 43h On timer isnt set Page BCC OFF HOUR-OFF MIN-INPUT-WD-FL-ETX B33h, 42h 59 =3Bh C33h, 43h Off timer isn’t set Schedule Write PG-ON HOURS-ON MIN-OFF HOURS-OFF MIN-INPUT-WD-FL-P ModePage BCC OFF HOUR-OFF MIN-INPUT-WD-FL-P Mode 57/72 SOH-0-Monitor ID-0-A-0-A STX-C-2-1-5-PG-EN-ETX Delimiter CR 0Dh End of packet 59/72 STX-C-2-1-4-PG-ON HOUR-ON MIN SOH-0-0-Monitor ID-B-1-8 STX-C-3-1-4-ST-PG-ON HOUR-ON MIN 030h, 30h 731h, 37h 23 =17h 831h, 38h Off timer isnt set SOH-0-0-Monitor ID-B-0-C STX-C-3-1-5-ST-PG-EN-ETX Self-diagnosis status read Self diagnosisPage Serial No. Read Serial No. & Model Name ReadModel Name Read Security Lock Control Security LockSTX-C-3-1-D-ST-EN-ETX Direct TV Chanel Read & Reply Direct TV Chanel Read & WriteDirect TV Chanel Write & Reply All data are subject to change without notice

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