Nec RS-232C User Manual

(1/50) External Control NEC LCD Monitor 1. Application This document defines the communications method for control of the NEC LCD m

(10/50) ASCII '0''0' (30h, 30h): Set parameter ASCII '0''1' (30h, 31h): Momentary Like Auto Setup function, t

(11/50) Bit 5-2 Reserved (Don't care) Bit 1 1:Positive Horizontal sync polarity. 0:Negative Horizontal sync polarity. Bit 0 1:

(12/50) Check code BCC: Block Check Code Refer to the section 4.5 “Check code” for a BCC calculation. Delimiter CR (0Dh): End of packet Ste

(13/50) CR (0Dh): End of packet Step 4. The monitor replies with a message for confirmation. Header SOH (01h): Start Of Header '0' (30h)

(14/50) The following shows the procedure for reading the temperatures from the sensors. Step 1. Select a temperature sensor which you want to read

(15/50) Delimiter CR (0Dh): End of packet Step 3. The controller requests the monitor to send the temperature from the selected sensor. Header

(16/50) Check code BCC: Block Check Code Refer to the section 4.5 “Check code” for a BCC calculation. Delimiter CR (0Dh): End of packet 7.

(17/50) 0001: ON 0002: Stand-by (power save) 0003: Suspend (power save) 0004: OFF (same as IR power off) ETX (03h): End of Message Check code BCC: B

(18/50) '0'-'0' (30h, 30h): Result code. No error. 'C'-'2’ ,'0'-'3'-'D'-'6&apo

(19/50) 'B' (42h): Message type is "Command reply" N-N: Message length Ex.) The byte data 20h is encoded to ASCII characters &apo

(2/50) 4. Communication Format The command packet consists of four parts, Header, Message, Check code and Delimiter. Sequence of a typical procedu

(20/50) Note.) The maximum data length that can be written to the monitor at a time is 32bytes. Ex.) The byte data 20h is encoded as ASCII characters

(21/50) 'C'-'3'-'1'-'1' (43h, 33h, 31h, 31h): Date & Time read reply command 'YY'-'MM&apo

(22/50) Message STX (02h): Start of Message 'C'-'2'-'1'-'2' (43h, 32h, 31h, 32h): Date & Time write comm

(23/50) ST: Date & Time Status command '0'-'0'(30h, 30h): No error '0'-'1'(30h, 31h): Error 'YY&apos

(24/50) '0'-'8'(30h, 38h): Message length Message STX (02h): Start of Message 'C'-'2'-'2'-&ap

(25/50) '0'-'1'(30h,31h): VGA '0'-'2'(30h,32h): RGB/HV '0'-'3'(30h,33h): DVI '0&apos

(26/50) Check code BCC: Block Check Code Refer to the section 4.5 “Check code” for a BCC calculation. Delimiter CR (0Dh): End of packet

(27/50) '0'-'0'(30h, 30h): 00 | '1'-'7'(31h, 37h): 23 (=17h) '1'-'8'(31h, 38h): ON tim

(28/50) This command is used in order to write the setting of the Schedule. 1) The controller requests the monitor to write Schedule. Header Message

(29/50) WD: Week setting bit 0: Monday bit 1: Tuesday bit 2: Wednesday bit 3: Thursday bit 4: Friday bit 5: Saturday bit 6: Sunday EX. '0&apos

(3/50) 2ndbyte) Reserved: Reserved for future extensions. On this monitor, it must be ASCII '0'(30h). 3rdbyte) Destination: Destination eq

(30/50) 2) The monitor replies a data for confirmation. Header Message Check code Delimiter SOH-'0'-'0'-Monitor ID-'B&apos

(31/50) bit 1: Tuesday bit 2: Wednesday bit 3: Thursday bit 4: Friday bit 5: Saturday bit 6: Sunday EX. '0'-'1'(30h, 31h): Monda

(32/50) SOH (01h): Start Of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID of which you want to change a setting. Ex.) If Mo

(33/50) ***Following command also can be used for to keep backward compatibility, in order to write the setting of the Schedule. 1) The controller

(34/50) bit 4: Friday bit 5: Saturday bit 6: Sunday EX. '0'-'1'(30h, 31h): Monday '0'-'4'(30h, 34h): Wednesd

(35/50) | '1'-'7'(31h, 37h): 23 (=17h) '1'-'8'(31h, 38h): Off timer isn't set. OFF_MIN: Turn off ti

(36/50) PG-EN: Enable/Disable Schedule data PG: Program No. '0'-'0'(30h, 30h): Program No.1 | '0'-'6'(30h

(37/50) SOH (01h): Start of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID which you want to get status. Ex.) If Monitor ID

(38/50) 12. Serial No. & Model Name Read 12.1 Serial No. Read This command is used in order to read a serial number. 1) The controller requests

(39/50) SOH-'0'-Monitor ID-'0'-'A'-'0'-'6' STX-'C'-'2'-'1'-'7&ap

(4/50) 5thbyte) Message Type: (Case sensitive.) Refer to section 4.2 “Message block format” for more details. ASCII 'A' (41h): Command.

(40/50) 1) The controller requests the monitor to set the condition of security lock. Header Message Check code Delimiter SOH-'0'-MonitorI

(41/50) 'C'-'3'-'1'-'D' (43h, 33h, 31h, 44h): Security Lock Control reply command ST-EN: Lock condition resu

(42/50) Appendix A. Operation Code (OP code) Table Item OP code page OP code Parameter Remarks Brightness 00h 10h 0: dark | 100(64h): brigh

(43/50) Item OP code page OP code Parameter Remarks Ambient Brightness Low 10h 33h 0: dark | 100(64h): bright Ambient Brightness High 10h 3

(44/50) Item OP code page OP code Parameter Remarks Zoom V-Position 02h CDh 0: Down side | Max.: Up side Aspect 02h 70h 1: Normal 2: Ful

(45/50) Item OP code page OP code Parameter Remarks PIP Mode 02h 72h 1: Off 2: PIP 3: POP (4: Still) 5: Side by side (aspect) 6: Side by sid

(46/50) Item OP code page OP code Parameter Remarks OSD Turn Off 00h FCh 0-1: Do not set. 2: 10s 3: 15s | 48: 240s 5sec/step H Position 02h

(47/50) Item OP code page OP code Parameter Remarks Fan Control 02h 7Dh 0: None 1: Auto(No offset) 2: Forced ON 3: Auto(offset -2) 4: Auto(of

(48/50) Item OP code page OP code Parameter Remarks SYNC Terminate 02h E1h 1: Hi(2.2kohm) 2: Lo(75ohm) DVI Mode 02h CFh 1: DVI-PC 2: DVI

(49/50) Item OP code page OP code Parameter Remarks Picture Mode 02h 1Ah 1: sRGB 3: Hi-Bright 4: Standard 5: Cinema 6: ISF-Day 7: ISF-Night 1

(5/50) Message format of the “Set parameter” is as follows,  Refer to section 5.3 “Set parameter” for more details. 4）Set Parameter reply The mo

(50/50) All data are subject to change without notice. (Revised at Mar.25/2010) Copyright 2004-2009 NEC Display Solutions, Ltd. All Right Reser

(6/50) Following is an example of a Check code (BCC) calculation. Check code (BCC) D17 = D1 xor D2 xor D3 xor … xor D14 xor D15 xor D16

(7/50) 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

(8/50) These bytes indicate a result of the requested commands as follows, 00h: No Error. 01h: Unsupported operation with this monitor or unsupported

(9/50) 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