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NEC V321-2 Communications Manual

V321-2 : rs232 codes for v321, v421, v461.
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External Control
1. Application
This document defines the communications method for control of the NEC LCD monitor MultiSync V321,V461
and LCD4215
when using an external controller
(R)
2. Connectors and wiring
2.1 RS-232C Remote control
Connector: 9-pin D-Sub
Cable: Cross (reversed) cable or null modem cable
(Please refer "Controlling the LCD monitor via RS-232C Remote control" on User's manual.)
2.2 LAN control ( Except LCD4215
Connector: RJ-45 10/100 BASE-T
Cable: Category 5 or higher LAN cable
(Please refer "Controlling the LCD monitor via LAN control" on User's manual.)
3. Communication Parameter
3.1 RS-232C Remote control
(1) Communication system
(2) Interface
(3) Baud rate
(4) Data length
(5) Parity
(6) Stop bit
(7) Communication code
3.2 LAN control ( Except LCD4215
(1) Communication system
(2) Interface
(3) Communication layer
(4) IP address
(5) Port No.
3.3 Communication timing
The controller should wait for a packet interval before next command is sent.
The packet interval needs to be longer than 600msec for the LCD monitor.
.
)
(R)
Asynchronous
RS-232C
9600bps
8bits
None
1 bit
ASCII
)
(R)
TCP/IP (Internet protocol suite)
Ethernet (CSMA/CD)
Transport layer (TCP)
* Using the payload of TCP segment.
(Default) 192.168.0.10
* If you need to change,
Please refer "Network settings" on User's manual.
7142 (Fixed)
(1/37)
NEC LCD Monitor

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   Summary of Contents for NEC V321-2

  • Page 1: External Control

    External Control NEC LCD Monitor 1. Application This document defines the communications method for control of the NEC LCD monitor MultiSync V321,V461 and LCD4215 when using an external controller 2. Connectors and wiring 2.1 RS-232C Remote control Connector: 9-pin D-Sub Cable: Cross (reversed) cable or null modem cable (Please refer “Controlling the LCD monitor via RS-232C Remote control”...

  • Page 2: Communication Format

    4. Communication Format Header Message Check Code Delimiter The command packet consists of four parts, Header, Message, Check code and Delimiter. Sequence of a typical procedure to control a monitor is as follows, [A controller and a monitor, two-way communication composition figure] Controller Monitor Get Parameter...

  • Page 3

    byte) Reserved: Reserved for future extensions. On this monitor, it must be ASCII '0'(30h). byte) Destination: Destination equipment ID. (Receiver) Specify a commands receiver’s address. The controller sets the “MONITOR ID” of the monitor controlled in here. On the reply, the monitor sets ‘0’ (30h), always. “MONITOR ID”...

  • Page 4

    ASCII 'B' (42h): Command reply. ASCII 'C' (43h): Get current parameter from a monitor. ASCII 'D' (44h): "Get parameter" reply. ASCII 'E' (45h): Set parameter. ASCII 'F' (46h): "Set parameter" reply. bytes) Message Length: Specify the length of the message (that follows the header) from STX to ETX. This length includes STX and ETX.

  • Page 5

    4 ÿ Set Parameter reply The monitor replies with this message for a confirmation of the “Set parameter message”. Message format of the “Set parameter reply” is as follows, OP code Requested setting Result OP code Type Max value page Value ...

  • Page 6

    xor … xor D Check code (BCC) D xor D xor D xor D xor D = 30h xor 41h xor 30h xor 45h xor 30h xor 41h xor 02h xor 30h xor 30h xor 31h xor 30h xor 30h xor 30h xor 36h xor 34h xor 03h = 77h 4.6 Delimiter...

  • Page 7: Message Type

    5. Message type 5.1 Get current Parameter from a monitor. OP code page OP code –5 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 “Appendix A.

  • Page 8: Set Parameter

    These bytes indicate a result of the requested commands as follows, 00h: No Error. 01h: Unsupported operation with this monitor or unsupported operation under current condition. This result code from the monitor is encoded to ASCII characters. Ex.) The byte data 01h is encoded to ASCII character '0' and '1' (30h and 31h). –5 bytes) OP code page: Operation code page.

  • Page 9

    This OP code page data must be encoded to ASCII characters. Ex.) The byte data 02h must be encoded to ASCII '0' and '2' (30h and 32h). Refer to the Operation code table. bytes) OP code: Operation code This OP code data must be encoded to ASCII characters. Ex.) OP code 1Ah ->...

  • Page 10: Save Current Settings

    ASCII '0''0' (30h, 30h): Set parameter ASCII '0''1' (30h, 31h): Momentary Like Auto Setup function, that automatically changes the parameter. bytes) Max. value: Maximum value that monitor can accept. (16bits) Reply data from the monitor is encoded to ASCII characters. Ex.) '0''1''2''3' means 0123h (291) bytes) Requested setting Value: Echoes back the parameter for confirmation.

  • Page 11: Null Message

    Bit 5-2 Reserved (Don't care) Bit 1 1:Positive Horizontal sync polarity. 0:Negative Horizontal sync polarity. Bit 0 1:Positive Vertical sync polarity. 0:Negative Vertical sync polarity.  H Freq: Horizontal Frequency in unit 0.01kHz  V Freq: Vertical Frequency in unit 0.01Hz Ex.) When H Freq is '1''2''A''9' (31h, 32h, 41h, 39h), it means 47.77kHz.

  • Page 12

    Delimiter CR (0Dh): End of packet Step 2. The monitor replies with current Brightness setting and capability to support this operation. Header Message Check code Delimiter SOH-'0'-'0'-Monitor ID-'D'-'1'-'2' STX-'0'-'0'-'0'-'0'-'1'-'0'-'0'-'0' -'0'-'0'-'6'-'4'-'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.

  • Page 13

    Header Message Check code Delimiter SOH-'0'-'0'- Monitor ID -'F'-'1'-'2' STX-'0'-'0'-'0'-'0'-'1'-'0'—'0'-'0'-'0' -'0'-'6'-'4'-'0'-'0'-'5'-'0'-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'. 'F' (46h): Message Type is "Set parameter reply".

  • Page 14

    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. 'E' (45h): Message Type is "Set parameter command". '0'-'A' (30h, 41h): Message length is 10 bytes.

  • Page 15

    '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.

  • Page 16: Power Control Procedure

    7. Power control procedure 7.1 Power status read 1) The controller requests the monitor to reply a current power status. Header Message Check code Delimiter SOH-'0'-Monitor ID-'0'-'A'-'0'-'6' STX-'0'-'1'-'D'-'6'-ETX Header SOH (01h): Start Of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID from which you want to get status. Ex.) If Monitor ID is '1', specify 'A'.

  • Page 17: Power Control

    CR (0Dh): End of packet 7.2 Power control 1) The controller requests the monitor to control monitor power. Header Message Check code Delimiter SOH-'0'-Monitor ID-'0'-'A'-'0'-'C' STX-'C'-'2'-'0'-'3'-'D'-'6'- '0'-'0'-'0'-'1'-ETX Header SOH (01h): Start Of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID which you want to change a setting. Ex.) If Monitor ID is '1', specify 'A'.

  • Page 18: Asset Data Read And Write

    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 Data Read Request and reply This command is used in order to read Asset Data. 1) The controller requests the monitor to reply with Asset data.

  • Page 19: Asset Data Write

    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 monitor to write Asset data. Header Message Check code Delimiter SOH-'0'-Monitor ID-'0'-'A'-N-N STX-'C'-'0'-'0'-'E'-'0'-'0'- Data(0)-Data(1)---Data(N)-ETX Header SOH (01h): Start Of Header '0' (30h): Reserved Monitor ID: Specify the Monitor ID in which you want to write data.

  • Page 20

    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 setting of Date & Time. 1) The controller requests the monitor to reply with the Date & Time. Header Message Check code...

  • Page 21

    '1'-'E'(31h, 45h): 30(=1Eh) '1'-'F'(31h, 46h): 31(=1Fh) WW: weekdays '0'-'0'(30h, 30h): Sunday '0'-'1'(30h, 31h): Monday '0'-'2'(30h, 32h): Tuesday '0'-'3'(30h, 33h): Wednesday '0'-'4'(30h, 34h): Thursday '0'-'5'(30h, 35h): Friday '0'-'6'(30h, 36h): Saturday HH: Hours '0'-'0'(30h, 30h): 0 '1'-'7'(31h, 37h): 23 (=17h) MN: Minutes '0'-'0'(30h, 30h): 0 '3'-'B' (33h, 42h): 59 (=3Bh) DS: Daylight saving (Summer time)

  • Page 22

    '0'-'1'(30h, 31h): 1 '1'-'E'(31h, 45h): 30(=1Eh) '1'-'F'(31h, 46h): 31(=1Fh) WW: weekdays '0'-'0'(30h, 30h): Sunday '0'-'1'(30h, 31h): Monday '0'-'2'(30h, 32h): Tuesday '0'-'3'(30h, 33h): Wednesday '0'-'4'(30h, 34h): Thursday '0'-'5'(30h, 35h): Friday '0'-'6'(30h, 36h): Saturday HH: Hours '0'-'0'(30h, 30h): 0 '1'-'7'(31h, 37h): 23 (=17h) MN: Minutes '0'-'0'(30h, 30h): 0 '3'-'B' (33h, 42h): 59 (=3Bh)

  • Page 23: Schedule Read And Write

    '0'-'1'(30h, 31h): 1 '1'-'E'(31h, 45h): 30(=1Eh) '1'-'F'(31h, 46h): 31(=1Fh) WW: weekdays '0'-'0'(30h, 30h): Sunday '0'-'1'(30h, 31h): Monday '0'-'2'(30h, 32h): Tuesday '0'-'3'(30h, 33h): Wednesday '0'-'4'(30h, 34h): Thursday '0'-'5'(30h, 35h): Friday '0'-'6'(30h, 36h): Saturday HH: Hours '0'-'0'(30h, 30h): 0 '1'-'7'(31h, 37h): 23 (=17h) MN: Minutes '0'-'0'(30h, 30h): 0 '3'-'B' (33h, 42h): 59 (=3Bh)

  • Page 24

    2) The monitor replies Schedule to the controller. Header Message Check code Delimiter SOH-'0'-'0'-Monitor ID-'B'-'1'-'6' STX-'C'-'3'-'1'-'3'-PG-ON HOUR-ON MIN- OFF HOUR-OFF Min-INPUT-WD-FL-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'.

  • Page 25: Schedule Write

    '0'-'1'(30h, 31h): Monday '0'-'4'(30h, 34h): Wednesday '0'-'F'(30h, 46h): Monday, Tuesday, Wednesday and Thursday '7'-'F'(37h, 46h): Monday to Sunday FL: Option bit 0: 0(30h):once 1(31h):Everyday bit 1: 0(30h):once 1(31h):Every week bit 2: 0:Disable 1:Enable '0'-'1'(30h, 31h): Disable, Everyday '0'-'4'(30h, 34h): Enable, once ETX (03h): End of Message Check code BCC: Block Check Code...

  • Page 26

    '1'-'8'(31h, 38h): Off timer isn't set. OFF_MIN: Turn off time (minute) '0'-'0'(30h, 30h): 0 '3'-'B'(33h, 42h): 59 (=3Bh) '3'-'C'(33h, 43h): Off timer isn’t set. INPUT: Timer input '0'-'0'(30h, 30h): DVI '0'-'2'(30h, 32h): VGA '0'-'3'(30h, 33h): RGB/HV '0'-'4'(30h, 34h): HDMI '0'-'5'(30h, 35h): DVD/HD1 '0'-'7'(30h, 37h): SCART '0'-'8'(30h, 38h): VIDEO1 '0'-'9'(30h, 39h): VIDEO2...

  • Page 27

    Message STX (02h): Start of Message 'C'-'3'-'1'-'4' (43h, 33h, 31h, 34h): Schedule writes reply command ST: Schedule Status command ‘0’(30h): No error ‘1’(31h): Error PG-ON HOURS-ON MIN-OFF HOURS-OFF MIN-INPUT-WD-FL: Schedule data PG: Program No. '0'-'0'(30h, 30h): Program No.1 '0'-'6'(30h, 36h): Program No.7 ON_HOUR: Turn on time (hour) '0'-'0'(30h, 30h): 00 '1'-'7'(31h, 37h): 23 (=17h)

  • Page 28

    '0'-'4'(30h, 34h): Enable, once 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 The controller requests the monitor to write Enable/Disable Schedule. Header Message Check code...

  • Page 29: Self Diagnosis

    '0'-'0'(30h, 30h): Program No.1 '0'-'6'(30h, 36h): Program No.7 EN: Enable /Disable '0'-'0'(30h, 30h): Disable '0'-'1'(30h, 31h): Enable 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 11.

  • Page 30

    ST: Result of self-tests '0'-'0'(30h, 30h):00: Normal '7'-'0'(37h, 30h):70: Main-power +3.3V abnormality '7'-'1'(37h, 31h):71: Main-power +12V abnormality '7'-'2'(37h, 32h):72: Maim-power +5V abnormality '7'-'3'(37h, 33h):73: Audio amplifier +24V abnormality '7'-'4'(37h, 34h):74: '7'-'5'(37h, 35h):75: '8'-'0'(38h, 30h):80: Cooling fan-1 abnormality '8'-'1'(38h, 31h):81: Cooling fan-2 abnormality '9'-'0'(39h, 30h):90: Inverter abnormality ETX (03h): End of Message Check code...

  • Page 31: Model Name Read

    32bytes. Ex.) The byte data 20h is encoded as ASCII characters '2' and '0' (32h and 30h). Message STX (02h): Start of Message 'C'-'3'-'1'-'6' (41h, 33h, 31h, 36h): Serial No. reply command Data(0)-Data(1)----Data(n):Serial Number  These data are encoded to ASCII characters strings. ETX (03h): End of Message Check code BCC: Block Check Code...

  • Page 32

    Check code BCC: Block Check Code Refer to the section 4.5 “Check code” for a BCC calculation. Delimiter CR (0Dh): End of packet (32/37)

  • Page 33

    Appendix A. Operation Code (OP code) Table 2009-10-31 Item OP code Parameter Remarks code page Brightness 0: dark MAX: bright Contrast 0: low MAX: high Sharpness 0: dull MAX: sharp Black Level 0: dark MAX: bright Tint 0: purplish MAX: greenish Color 0: pale MAX: deep...

  • Page 34

    Item OP code Parameter Remarks code page H Resolution 0: Low Max. : High V Resolution 0: Low Max.: High Input Resolution 1: Auto 2: 1024x768 3: 1280x768 4: 1360x768 5: 1366x768 Zoom mode 1:Off (Real) 2:Custom 3:16:9-ZOOM 4:14:9-ZOOM 5:Dynamic Custom Zoom Zoom 1:100 ÿ...

  • Page 35

    Item OP code Parameter Remarks code page Enable Schedule 0: No Mean 1: No.1 Enable 7: No.7 Enable Disenable Schedule 0: No Mean 1: No.1 Disable 7: No.7 Disable Schedule reset 0: None Momentary 5: Reset Schedule category PIP Mode 1: Off 2: PIP 3: POP...

  • Page 36

    Item OP code Parameter Remarks code page Language 1: English OSD Language 2: German 3: French 4: Spanish 5: Japanese 6: Italian 7: Swedish OSD Turn Off 0-9:Do not set. 5sec/step 10:10s 11:11s 60:60s 0: Left Position Position MAX.: Right 0: Down Position MAX.: Up...

  • Page 37

    NEC Display Solutions, Ltd. makes no warranty for the use of its products and bears no responsibility for any errors or omissions which may appear in this document.

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