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NEC RS-232C user manual Delimiter CR 0Dh End of packet

Models: RS-232C

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Delimiter

CR (0Dh): End of packet

Step 3. The controller requests the monitor to send the temperature from the selected sensor.

	Header	Message	Check code	Delimiter
SOH-'0'-Monitor ID-'0'-'C'-'0'-'6'		STX-'0'-'2'-'7'-'9'-ETX	BCC	CR
Header
SOH	(01h): Start of Header
'0'	(30h): Reserved

Monitor ID: Specify the Monitor ID which you want to get a value. Ex.) If Monitor ID is '1', specify 'A'.

'0' (30h): Message sender is the controller.

'C' (43h): Message Type is "Get parameter".

'0'-'6' (30h, 36h): Message length is 6 bytes.

Message

STX (02h): Start of Message

'0'-'2' (30h, 32h): Operation code page number is 2.

'7'-'9' (37h, 39h): Operation code is 79h (in the page 2).

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

Step 4. The monitor replies a temperature of selected sensor.

Header						Message				Check code		Delimiter
SOH-'0'-'0'-Monitor ID-'D'-'1'-'2'			STX-'0'-'0'-'0'-'2'-'7'-'9'-'0'-'0'							BCC		CR
			-'F'-'F'-'F'-'F'-'0'-'0'-'3'-'2'-ETX
Header
SOH (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'.
'D' (44h): Message Type is "Get parameter reply".
'1'-'2' (31h, 32h): Message length is 18 bytes.
Message
STX (02h): Start of Message
'0'-'0' (30h, 30h): Result code. No error.
'0'-'2' (30h, 32h): Operation code page number is 2.
'7'-'9' (37h, 39h): Operation code is 79h (in the page 2).
'0'-'0' (30h, 30h): This operation is "Set parameter" type.
'F'-'F'-'F'-'F' (46h, 46h, 46h, 46h): Maximum value.
'0'-'0'-'3'-'2' (30h, 30h, 33h, 32h): The temperature is 25 degrees Celsius.
		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

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NEC RS-232C user manual Delimiter CR 0Dh End of packet

Contents

1. Application 2. Connectors and wiring2.1 RS-232C Remote control 3.1 RS-232C Remote control4.1 Header block format fixed length 4. Communication Format3rdbyte Destination Destination equipment ID. Receiver Message 4.2 Message block formatHeader Check code DelimiterDelimiter 4.5 Check codeHeader Message Check codeCheck code 4.6 DelimiterHeader Message5. Message type 5.1 Get current Parameter from a monitor5.2 Get parameter reply 5.3 Set parameter 5.4 Set parameter reply 5.5 Commands 5.5.1 Save Current Settings5.5.2 Get Timing Report and Timing reply 6. Typical procedure example 6.1. How to change the “Brightness” setting5.5.3 NULL Message SOH-0-0-Monitor ID-D-1-2 Page Step 1. Select a temperature sensor which you want to read Delimiter CR 0Dh End of packet 7.1 Power status read 7. Power control procedure1 The controller requests the monitor to control monitor power 7.2 Power control8.1 Asset Data Read Request and reply 8. Asset Data read and write8.2 Asset Data write 9.1 Date & Time Read 9. Date & Time read and writeThis command is used in order to write the setting of the Date & Time 9.2 Date & Time Write1 The controller requests the monitor to write Date & Time Message STX 02h Start of Message This command is used in order to read the setting of the Schedule 10. Schedule read and write10.1 Schedule Read 0-830h, 38h Message length Message STX 02h Start of Message 0-130h,31h VGA 0-230h,32h RGB/HV 0-330h,33h DVI 0-530h,35h Video1 Page 10.2 Schedule Write 1 The controller requests the monitor to write Schedule This command is used in order to write the setting of the ScheduleEX 0-130h, 31h Monday 0-430h, 34h Wednesday 2 The monitor replies a data for confirmation Page STX-C-3-1-5-ST-PG-EN-ETX SOH-0-0-Monitor ID-B-0-C1 The controller requests the monitor to write Schedule bit 4 Friday bit 5 Saturday bit 6 Sunday EX 0-130h, 31h Monday 1-731h, 37h 23 =17h 1-831h, 38h Off timer isnt set This command is used in order to read the Self-diagnosis status 11. Self diagnosis11.1 Self-diagnosis status read SOH 01h Start of Header 0 30h Reserved 12.1 Serial No. Read This command is used in order to read a serial numberThis command is used in order to read the Model Name 12. Serial No. & Model Name Read13.1 Security Lock Control 13. Security LockP2 Security Pass code 2nd 0-030h, 30h SOH-0-MonitorID-0-A-1-0STX-C-2-1-D-EN-P1-P2-P3-P4-ETX P1 Security Pass code 1st 0-030h, 30hETX 03h End of Message Check code BCC Block Check Code C-3-1-D 43h, 33h, 31h, 44h Security Lock Control reply commandST-EN Lock condition result data ST Status 0-030h, 30h No error 0-130h, 31h ErrorA. Operation Code OP code Table AppendixADJUST SCHDULE AUDIOPage OSD Transparency OSD timer secondsMenu tree reset Information OSDOption Advanced7 Autooffset Terminate Carbon footprint Temperature sensorAll data are subject to change without notice Revised at Mar.25/201050/50