NEC LCD4620-2-AV User Manual

(1/40) External Control NEC LCD Monitor 1. Application This document defines the communications method for control of the NEC LCD m

(10/40) Bit 5-2 Reserved (Don't care) Bit 1 1:Positive Horizontal sync polarity. 0:Negative Horizontal sync polarity. Bit 0 1:

(11/40) Delimiter CR (0Dh): End of packet Step 2. The monitor replies with current Brightness setting and capability to support this operation. H

(12/40) Header SOH (01h): Start Of Header '0' (30h): Reserved '0' (30h): Message receiver is the controller. Monitor ID: Indicat

(13/40) Header SOH (01h): Start of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID which you want to get a value. Ex.) If Mo

(14/40) 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

(15/40) 7. Power control procedure 7.1 Power status read 1) The controller requests the monitor to reply a current power status. Header Message Ch

(16/40) CR (0Dh): End of packet 7.2 Power control 1) The controller requests the monitor to control monitor power. Header SOH (01h): Start Of Heade

(17/40) Refer to the section 4.5 “Check code” for a BCC calculation. Delimiter CR (0Dh): End of packet 8. Asset Data read and write 8.1 Asset

(18/40) Delimiter CR (0Dh): End of packet 8.2 Asset Data write This command is used in order to write Asset Data. 1) The controller requests the mon

(19/40) Delimiter CR (0Dh): End of packet 9. Date & Time read and write 9.1 Date & Time Read This command is used in order to read the set

(2/40) 4. Communication Format The command packet consists of four parts, Header, Message, Check code and Delimiter. Sequence of a typical procedu

(20/40) '1'-'E'(31h, 45h): 30(=1Eh) '1'-'F'(31h, 46h): 31(=1Fh) WW: weekdays '0'-'0'(30

(21/40) '0'-'1'(30h, 31h): 1 | '1'-'E'(31h, 45h): 30(=1Eh) '1'-'F'(31h, 46h): 31(=1Fh)

(22/40) '0'-'1'(30h, 31h): 1 | '1'-'E'(31h, 45h): 30(=1Eh) '1'-'F'(31h, 46h): 31(=1Fh)

(23/40) 2) The monitor replies Schedule to the controller. Header Message Check code Delimiter SOH-'0'-'0'-Monitor ID-'B&

(24/40) EX. '0'-'1'(30h, 31h): Monday '0'-'4'(30h, 34h): Wednesday '0'-'F'(30h, 46h): Mo

(25/40) '1'-'8'(31h, 38h): Off timer isn't set. OFF_MIN: Turn off time (minute) '0'-'0'(30h, 30h): 0

(26/40) STX (02h): Start of Message 'C'-'3'-'1'-'4' (43h, 33h, 31h, 34h): Schedule writes reply command ST: S

(27/40) '0'-'4'(30h, 34h): Enable, once ETX (03h): End of Message Check code BCC: Block Check Code Refer to the section 4

(28/40) '0'-'6'(30h, 36h): Program No.7 EN: Enable /Disable '0'-'0'(30h, 30h): Disable '0'-'1

(29/40) 70: Standby-power digital +3.3V abnormality 71: Standby-power +5V abnormality 72: Main-power panel +12V abnormality 73: Main-power +2.5V abno

(3/40) “Monitor ID” to “Destination Address” conversion table is as follows, Monitor ID Destination Address (ASCII) Monitor ID Destination Address

(30/40) Note.) The maximum data length that can be returned from the monitor at a time is 32bytes. Ex.) The byte data 20h is encoded as ASCII charact

(31/40) 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

(32/40) Delimiter CR (0Dh): End of packet 2) The monitor replies the result to the controller. Header Message Check code Delimiter SOH-'0&ap

(33/40) Appendix A. Operation Code (OP code) Table Item OP code page OP code Parameter Remarks Brightness 00h 10h 0: dark | MAX.: bright C

(34/40) Item OP code page OP code Parameter Remarks Clock 00h 0Eh 0: | Max. Clock Phase 00h 3Eh 0: | Max. H Resolution 02h 50h 0: | M

(35/40) Item OP code page OP code Parameter Remarks Off Timer 02h 2Bh 0: Off 1: 1 hour | 24: 24 hours 1 hour/step Enable Schedule 02h E5h

(36/40) Item OP code page OP code Parameter Remarks V Position 02h 39h 0: | MAX.: Information OSD 02h 3Dh 0:Disable information OSD 3-10: O

(37/40) Item OP code page OP code Parameter Remarks Motion 02h DDh 0: 0s(Off) | 90: 900s 10s/step Side Border Color 02h DFh 0:Black | MAX.

(38/40) Item OP code page OP code Parameter Remarks Audio Input 02h 2Eh 1: Audio 1(PC) 2: Audio 2 3: Audio 3 4: HDMI 5: TV(A) 6: TV(D)/Option

(39/40) Item OP code page OP code Parameter Remarks Select Temperature sensor 02h 78h 1: Sensor #1 2: Sensor #2 3: Sensor #3 Temperature sen

(4/40) 1）Get current parameter The controller sends this message when you want to get the status of the monitor. For the status that you want to get,

(40/40) All data are subject to change without notice. Copyright 2004-2007 NEC Display Solutions, Ltd. All Right Reserved This document provide

(5/40) “Command reply message” format depends on each command. Refer to section 5.5 “Commands message” for more details. 4.5 Check code Check code

(6/40) 5. Message type 5.1 Get current Parameter from a monitor. Send this message when you want to get the status of a monitor. For the status t

(7/40) These bytes indicate a result of the requested commands as follows, 00h: No Error. 01h: Unsupported operation with this monitor or unsupported

(8/40) This OP code page data must be encoded to ASCII characters. Ex.) The byte data 02h must be encoded to ASCII '0' and '2' (3

(9/40) ASCII '0''0' (30h, 30h): Set parameter ASCII '0''1' (30h, 31h): Momentary Like Auto Setup function, th