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External Control                                    NEC LCD Monitor

 

1. Application

 

 

This document defines the communications method for control of the NEC LCD monitor, MultiSync 

LCD4020/4620/5220/6520 and MULTEOS M40/46 when using an external controller

.

 

 

2. Connectors and wiring 

 

Connector: D-Sub 9-pin 

 Cable: Cross (reversed) cable or null modem cable 
 

 

(Please refer 

“

Using the LCD with RS-232C

”

 on each User

’

s manual.) 

 
 
 
 

3. Communication Parameter

 

   

(1) Communication system Asynchronous 

  (2) Interface   

RS-232C 

(3) Baud rate   

9600bps 

(4) Data length 

8bits 

(5) Parity 

 

None 

(6) Stop bit 

 

1 bit 

(7) Communication code  ASCII 

 

3.1 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.

 

 

 

Содержание LCD4020-BK-AV - 40IN LCD 1200:1 1366X768 60HZ Dvi-d...

Страница 1: ...pin Cable Cross reversed cable or null modem cable Please refer Using the LCD with RS 232C on each User s manual 3 Communication Parameter 1 Communication system Asynchronous 2 Interface RS 232C 3 Baud rate 9600bps 4 Data length 8bits 5 Parity None 6 Stop bit 1 bit 7 Communication code ASCII 3 1 Communication timing The controller should wait for a packet interval before next command is sent The p...

Страница 2: ...sage Type Message Length 1st 2nd 3rd 4th 5th 6th 7th Monitor Controller Header Message Check Code Delimiter Header Message Check Code Delimiter Get Parameter Get Parameter Reply Header Message Check Code Delimiter Set Parameter Header Message Check Code Delimiter Set Parameter Reply Header Message Check Code Delimiter Header Message Check Code Delimiter Get Parameter Reply Save Current Setting Com...

Страница 3: ... sender address The controller must be 0 30h 5th byte Message Type Case sensitive Refer to section 4 2 Message block format for more details ASCII A 41h Command 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 6th 7th bytes Message Length Specify the length of the message that follow...

Страница 4: ...ows Refer to section 5 3 Set parameter for more details 4 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 Refer to section 5 4 Set parameter reply for more details 5 Command Command message format depends on each command Usually this command message is used for some non slider controls...

Страница 5: ... 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 Packet delimiter code ASCII CR 0Dh Header Message Check code Delimiter 27 26 25 24 23 22 21 20 SOH D0 Reserved D1 Destination D2 Source D3 Type D4 Length D5 STX D6 Data D7 ETX Dn Check code Dn 1 P P P P P P P P Header Message SOH Reserved Destination Address Source Address Message type Message le...

Страница 6: ... OP code page Lo ASCII 2 32h Refer to Operation code table Appendix A 4th 5th bytes OP code Operation code Refer to Appendix A Operation code table for each item OP code data must be encoded to ASCII characters Ex The byte data 3Ah must be encoded to ASCII characters 3 and A 33h and 41h OP code 3Ah OP code Hi ASCII 3 33h OP code Lo ASCII A 41h Refer to Operation code table 6th byte ETX End of Mess...

Страница 7: ...Ah is encoded to ASCII character 1 and A 31h and 41h 8th 9th bytes Type Operation type code 00h Set parameter 01h Momentary Like the Auto Setup function which automatically changes the parameter This returned value from the monitor is encoded to ASCII characters Ex The byte data 01h is encoded to ASCII character 0 and 1 30h and 31h 10th 13th bytes Max value Maximum value which monitor can accept 1...

Страница 8: ...byte STX Start of Message ASCII STX 02h 2nd 3rd bytes Result code ASCII 0 0 30h 30h No Error ASCII 0 1 30h 31h Unsupported operation with this monitor or unsupported operation under current condition 4th 5th bytes OP code page Echoes back the Operation code page for confirmation Reply data from the monitor is encoded to ASCII characters Ex OP code page 02h OP code page ASCII 0 and 2 30h and 32h Re...

Страница 9: ... the monitor to store the adjusted value Send OC 30h 43h as Save current settings command Complete Save Current setting command packet as follows ASCII 01h 30h 41h 30h 41h 30h 34h 02h 30h 43h 03h CHK 0Dh SOH 0 A 0 A 0 4 STX 0 C ETX CHK CR The monitor replies the packet for confirmation as follows SOH 0 0 A B 0 6 STX 0 0 0 C ETX CHK CR 5 5 2 Get Timing Report and Timing reply The controller request...

Страница 10: ...0 0 A A 0 4 STX B E ETX CHK CR 6 Typical procedure example The following is a sample of procedures to control the monitor these are examples of Get parameter Set parameter and Save current settings 6 1 How to change the Brightness setting Step 1 The controller requests the Monitor to reply with the current brightness setting and capability to support this operation Get parameter Header Message Che...

Страница 11: ...ection 4 5 Check code for a BCC calculation Delimiter CR 0Dh End of packet Step 3 The controller request the monitor to change the Brightness setting Header SOH 01h Start Of Header 0 30h Reserved Monitor ID Specify the Monitor ID of which you want to change a setting 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 Messa...

Страница 12: ... code Delimiter SOH 0 Monitor ID 0 A 0 4 STX 0 C ETX BCC CR Header SOH 01h Start Of Header 0 30h Reserved Monitor ID Specify the Monitor ID which you want to store the setting Ex If Monitor ID is 1 specify A 0 30h Message sender is the controller A 41h Message type is Command 0 4 30h 34h Message length is 4 bytes Message STX 02h Start of Message 0 C 30h 43h Command code is 0Ch as Save current sett...

Страница 13: ...ver is the controller Monitor ID Indicates 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 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 8 37h 38h Operation code is 78h in the page 2 0 0 30h 30h This operation is Set par...

Страница 14: ...g 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 Ce...

Страница 15: ...h the current power status 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 B 42h Message Type is Command reply 1 2 31h 32h Message length is 18 bytes Message STX 02h Start of Message 0 2 30h 32h Reserved data 0 0 30h 30h Result code 00 No Error 01 Unsupported ...

Страница 16: ...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 B 42h Message type is Command reply N N Message length 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 2 and 0 32h and 30h ...

Страница 17: ...out data length is 32bytes Secondly set 20h Read data from the 32bytes offset point in the Asset data area Maximum readout length is 32bytes at a time 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 2 The monitor replies Asset data to the controller Header Message Check code Delimiter SOH 0 0 Monitor ID...

Страница 18: ...rs strings 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 2 The monitor replies a data for confirmation Header Message Check code Delimiter SOH 0 0 Monitor ID B N N STX 0 0 C 0 0 E 0 0 Data 0 Data 1 Data N ETX BCC CR Header SOH 01h Start Of Header 0 30h Reserved 0 30h Message receiver is the controller...

Страница 19: ...est command 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 2 The monitor replies Date Time to the controller Header Message Check code Delimiter SOH 0 0 Monitor ID B 1 4 STX C 3 1 1 YY MM DD WW HH MM DS ETX BCC CR Header SOH 01h Start of Header 0 30h Reserved 0 30h Message receiver is the controller Mo...

Страница 20: ...This command is used in order to write the setting of the Date Time 1 The controller requests the monitor to write Date Time Header Message Check code Delimiter SOH 0 Monitor ID 0 A 1 2 STX C 2 1 2 YY MM DD WW HH MN DS ETX BCC CR Header SOH 01h Start Of Header 0 30h Reserved Monitor ID Specify the Monitor ID of which you want to change the setting Ex If Monitor ID is 1 specify A 0 30h Message send...

Страница 21: ...he monitor replies a data for confirmation Header Message Check code Delimiter SOH 0 0 Monitor ID B 1 6 STX C 3 1 2 ST YY MM DD WW HH MN DS ETX BCC CR 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 B 42h Message type is Command reply 1 6 31h 36h Message lengt...

Страница 22: ...ule Read This command is used in order to read the setting of the Schedule 1 The controller requests the monitor to read Schedule Header Message Check code Delimiter SOH 0 Monitor ID 0 A 0 8 STX C 2 1 3 PG ETX BCC CR Header SOH 01h Start Of Header 0 30h Reserved Monitor ID Specify the Monitor ID of which you want to get status Ex If Monitor ID is 1 specify A 0 30h Message sender is the controller ...

Страница 23: ...NPUT 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 1 8 31h 38h ON timer isn t set ON_MIN Turn on time minute 0 0 30h 30h 0 3 B 33h 42h 59 3 C 33h 43h On timer isn t set OFF_HOUR Turn off time hour 0 0 30h 30h 00 1 7 31h 37h 23 17h 1 8 31h 38h Off timer isn t set OFF_MIN Turn off time minute 0 0 30h 30...

Страница 24: ...er SOH 0 Monitor ID 0 A 1 6 STX C 2 1 4 PG ON HOURS ON MIN OFF HOURS OFF MIN INPUT WD FL ETX BCC CR Header SOH 01h Start Of Header 0 30h Reserved Monitor ID Specify the Monitor ID of which you want to change a setting Ex If Monitor ID is 1 specify A 0 30h Message sender is the controller A 41h Message type is Command 1 6 31h 36h Message length Message STX 02h Start of Message C 2 1 4 43h 32h 31h 3...

Страница 25: ...Option bit 0 0 once 1 Everyday bit 1 0 once 1 Every week bit 2 0 Disable 1 Enable When bit 0 and bit 1 are 1 it behaves as Everyday EX 0 1 30h 31h Disable Everyday 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 2 The monitor replies a data for confirmation Header Message Check c...

Страница 26: ... 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 1 30h 31h VGA 0 2 30h 32h RGB HV 0 3 30h 33h HDMI 0 4 30h 34h DVD HD 0 5 30h 35h VIDEO 0 6 30h 36h S VIDEO 0 7 30h 37h TV A 0 8 30h 38h TV D 0 9 30h 39h Option WD Week setting bit 0 Monday bit 1 Tuesday bit 2 Wednesday bit 3 Thursday bit 4 F...

Страница 27: ...a PG Program No 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 4 The monitor replies a data for confirmation Header Message Check code Delimiter SOH 0 0 Monitor ID B 0 C STX C 3 1 5 ST PG EN ETX B...

Страница 28: ...d 0 4 30h 34h Message length Message STX 02h Start of Message B 1 42h 31h Self diagnosis command 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 2 The monitor replies a result of the self diagnosis Header Message Check code Delimiter SOH 0 0 Monitor ID B N N STX A 1 ST 0 ST 1 ST n ETX BCC CR Header SOH ...

Страница 29: ...the monitor to read a serial number Header Message Check code Delimiter SOH 0 Monitor ID 0 A 0 6 STX C 2 1 6 ETX BCC CR Header SOH 01h Start Of Header 0 30h Reserved Monitor ID Specify the Monitor ID which you want to get serial number Ex If Monitor ID is 1 specify A 0 30h Message sender is the controller A 41h Message type is Command 0 6 30h 36h Message length Message STX 02h Start of Message C 2...

Страница 30: ...h Message sender is the controller A 41h Message type is Command 0 6 30h 36h Message length Message STX 02h Start of Message C 2 1 7 43h 32h 31h 37h Model Name command 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 2 The monitor replies the model name data to the controller Header Message Check code De...

Страница 31: ...troller requests the monitor to set the condition of security lock Header Message Check code Delimiter SOH 0 MonitorID 0 A 1 0 STX C 2 1 D EN P1 P2 P3 P4 ETX BCC CR Header SOH 01h Start Of Header 0 30h Reserved Monitor ID Specify the Monitor ID of which you want to change a setting Ex If Monitor ID is 1 specify A 0 30h Message sender is the controller A 41h Message type is Command 1 0 31h 30h Mess...

Страница 32: ...When this byte is set to A the replying Monitor ID is 1 B 42h Message type is Command reply 0 A 30h 41h Message length Message STX 02h Start of Message C 3 1 D 43h 33h 31h 44h Security Lock Control reply command ST EN Lock condition result data ST Status 0 0 30h 30h No error 0 1 30h 31h Error EN Enable Disable Current condition 0 0 30h 30h Disable 0 1 30h 31h Enable ETX 03h End of Message Check co...

Страница 33: ...ta A0h 0 32 center 64 Saturation 8Ah 0 pale 10 deep Gamma Selection 02h 68h Gamma Table Selection 1 Native Gamma 4 Gamma 2 2 8 Gamma 2 4 7 S Gamma 5 DICOM SIM 6 Programmable Adaptive Contrast 02h 8Dh 0 None 1 Off 2 Low 3 Middle 4 High Noise Reduction 02h 20h 0 Off MAX Movie Settings Film Mode 02h 23h 1 Off 2 Auto PICTURE Menu tree reset Picture 02h CBh 0 None 2 Reset Picture category Momentary Aut...

Страница 34: ... 02h 6Dh 1 100 2 101 201 300 Zoom H Position 02h CCh 0 Left side Max Right side Zoom Mode Zoom V Position 02h CDh 0 Down side Max Up side Input Resolution 02h DAh 1 Auto 2 1024x768 3 1280x768 4 1360x768 5 1366x768 6 1400x1050 7 1680x1050 Menu tree reset Adjust 02h CBh 0 None 3 Reset Adjust category Momentary Balance 00h 93h O Left 50 Center 100 Right Treble 00h 8Fh O Min 50 Center 100 Max Bass 00h...

Страница 35: ... 6 Side by side Full PIP Size 02h 71h 1 Small 2 Middle 3 Large Mode 10h 08h 0 None 1 Off 2 Horizontal 3 Vertical Position 10h 09h 0 Top Left 100 Bottom Right Size 10h 0Ah 0 1 Do not set 2 Narrow 2 24 8 Wide 8 24 Blend 10h 0Bh 1 10 10 100 Detect 10h 0Ch 0 None 1 Auto 2 Off Text Ticker Fade In 10h 0Dh 0 None 1 On 2 Off PIP Menu tree reset PIP 02h CBh 0 None 6 Reset PIP category Momentary Language 00...

Страница 36: ...Lower right Tile comp 02h D5h 1 Disable Off 2 Enable On Tile Matrix Mode 02h D3h 1 Disable Off and display frame 2 Enable On 3 Disable Off and erase frame Power On Delay 02h D8h 0 Off 0sec 50 50sec Power Indicator 02h BEh 0 None 1 Off 2 On MULTI DISPLAY Menu tree reset Multi Display 02h CBh 0 None 8 Reset Multi Display category Momentary Power Save 00h E1h 0 Off 1 On Standby Mode 02h 9Ah 0 None 1 ...

Страница 37: ... Peak 02h 6Ah 0 Off 1 On VIDEO EQ 02h E0h 0 7 Long Cable Manual SYNC Terminate 02h E1h 1 Hi 2 2kohm 2 Lo 75ohm DVI Mode 02h CFh 1 DVI PC 2 DVI HD Scan Conversion 02h 25h 1 Off INTERLACE 2 Enable IP ON PROGRESSIVE SCART Mode 02h 9Eh 0 Off 1 On S Video Mode 02h E2h 1 Priority 2 Separate Color System 02h 21h 1 NTSC 2 PAL 3 SECAM 4 Auto 5 4 43NTSC 6 PAL 60 Scan Mode 02h E3h 1 Under Scan 2 Over Scan Me...

Страница 38: ... Wide 4 Zoom Wide A V mode only PIP ON OFF Still ON OFF 02h 72h 1 Off 2 PIP 3 POP 4 Still 5 Side by side aspect 6 Side by side Full PIP Input 02h 73h 0 No mean 3 DVI 1 VGA 2 RGB HV 4 HDMI 12 DVD HD 5 VIDEO Composite 7 S VIDEO 9 TV A 10 TV D 13 Option This operation has limitation of selection Please refer to the monitor instruction manual Still Capture 02h 76h 0 Off 1 Capture Momentary PIP H Posit...

Страница 39: ... code page OP code Parameter Remarks Select Temperature sensor 02h 78h 1 Sensor 1 2 Sensor 2 3 Sensor 3 Temperature sensor Readout a temperature 02h 79h Returned value is 2 s complement Refer to section 6 2 Read only ...

Страница 40: ...cument provides the technical information for users NEC Display Solutions Ltd reserves the right to change or modify the information contained herein without notice 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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