NEC 42PD2, 50PD1, 50PD1, 42PD2 user manual Communication Parameters, Communication Format

Page 53

Communication Parameters

(1)

Communication system

Asynchronous

(2)

Interface

RS-232C

(3)

Baud rate

9600 bps

(4)

Data length

8 bits

(5)

Parity

Odd

(6)

Stop bit

1 bit

(7)

Communication code

Hex

Communication Format

8bit

 

8bit

 

8bit

 

8bit

 

8bit

 

8bit

 

 

 

8bit

 

8bit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check

 

Sum

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data length

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNIT ID 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNIT ID 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Command 1

Together with Command 2, this is a number that distin- guishes the various commands.

For ACK, when bit 2 and bit 3 are both “1”, reception of a supported command or data is indicated. When bit 2 is “0”, reception of an unsupported command or data is in- dicated.

Bit 0 and bit 1 should be set as described below.

bit0

bit1

 

0

0

When multiple screens are selected

0

1

Not used

1

0

At time of set ID selection

1

1

At time of regular use

Unit ID 1 and Unit ID 2

1)Unit ID1: Sets a number corresponding to the various sets ID (1 through 4) when multiple screens are se- lected, and to 1 through 256 at the time of set ID selec- tion. “00H” must be output when the ID is not set.

2)Unit ID2: Makes settings on the occasion of simulta- neously operating all sets connected in cascade at the time of multiple screen mode and at the time of set ID selection.

Selection of all sets: FFH

At time of regular setting: 00H

Command 2

Together with Command 1, this is a number that distin- guishes the various commands.

Check Sum (CKS), Error Processing, and ACK

1)Checks for receive data incorporate both the following checksum and RS-232C (odd) parity.

The checksum comprises the following aspects of one transmitted or received frame: Command 1, Unit 1 and 2, Command 2, data length, and the lower order 8 bits of the total data.

Check Sum Example

9FH

40H

4FH

01H

01H

30H

Command 1

Unit ID

Command 2

Data Length

Data

Check Sum

 

 

 

 

 

 

▲

 

 

 

 

 

 

 

Total 130H

2)Error Processing

(1)When the communications interval is 4 ms or greater, the arrival of a subsequent Command 1 will be recognized. If meaningful data cannot be discerned at this time, that data will not be recog- nized.

(2)When the receive data error, checksum error, and the receive data could not all be taken in, ACK is not returned.

3)Returning an ACK

When command processing exceeds 0.5 seconds fol- lowing command reception, an ACK1 for which bit 3 of Command 1 has been set to “0” (during command processing) is returned every 0.5 seconds until com- mand processing is completed. When command pro- cessing is completed, an ACK2 for which bit 3 of Command 1 has been set to “1” (at the end of com- mand processing) is returned every 0.5 seconds until command processing is completed. Bit 1 of Command 1 is set to 0 ; when the UA2 setting is FFH, it becomes possible to simultaneously operate all sets connected in cascade and as a result, ACK is not returned.

Communications Flow

 

 

Personal computer

Plasma display

PC or other external equipment

 

 

 

 

 

 

 

 

 

Various commands

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ACK

When various commands are sent from a personal com- puter (PC) or other external equipment, the display is al- ways ready to receive them.

Note that resending of the command is recommended when an ACK is not returned from the display within 1.5 seconds.

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Contents User’s Manual Important Information PrecautionsTo avoid damage and prolong operating life Mises en garde et précautions de sécurité PrécautionsDOC avis de conformation Remarque What is Covered and What is not Covered Limited Warranty Plasma MonitorsContents Pulling Out and Reinserting the Retractable Feet Ventilation Requirements for en- closure mountingContents of the Package Features you’ll enjoy includeIntroduction Introduction to the PlasmaSync 42PD2/50PD1Connect the equipment Setup ProcedureHousing the Remote Control in the Remote Control Holder Attaching the Remote Control HolderOpening the Terminal Board Cover Removing the Terminal Board CoverFront View Part Names and FunctionsSide View.... Terminal Board L/R AC in connector11 RGB3 DVI 29pin Remote Mini jackRemote Controller Battery Installation and Replacement Remote control transmitterVisual Normal button Raster Normal buttonOperating Range Using the wired remote control modeDIP Switch Functions and Settings Making the DIP Switch SettingsMode Power Management FunctionPower Management Modes Wiring Diagram InstallationConnecting Your VCR DVD or Laser Disc Player Connecting Your PC or Macintosh ComputerConnecting Your Document Camera Connections with Equipment that has a Digital InterfaceDaisy-chaining Your monitors When using the Video inputsWhen using the RGB2 Input Adjustment of the Display PowerOperation General ControlsAbout to Preset Raster Press Adjustment of the Display DirectAdjustment of the screen display position Adjustment display of the left/right positionAbout to Preset Visual Press Adjustment of the ImageList of Setting Details Adjustment of the DisplayMenu ControlSettings Before Making Adjustments Automatic Storage About to Reset PressPress the Visual Normal button or Raster Normal button Brightness Contrast Sharpness Color Tint GAMMA2 Adjustment of the Image Visual ControlsAlign the cursor with icon Return to the main menuAlign the cursor with the desired item Adjustment of Screen Position HorizontalPosition Width Position Height Adjustment of Screen Position VerticalColor Temp Color Temperature Color TempColor Temp High LOW User Align the cursor with Color Temp and set with the / buttonsGain White Level Bias Black Level Adjustment of the White BalanceOSM H-POS OSM V-POS OSM Angle OSM Display Time Adjustment of the On-screen Display PositionExiting the adjustment OSM H-POS OSM V-POS OSM Angle OSM Display Time Seconds Setting the On-screen Display OFF TimeAdjustment of the Clock Frequency/Clock Phase RGB Mode StillInput Mode 4 X 3 / 16 X NormalClock phase adjustment Fine Picture RGB ModePOL.NEG POL.POS ALL Visual Normal ALL Raster Normal ALL NormalSource Info RGB1 When RGB input is selected Source RGB1, RGB2, RGB3 Source Info Video Mode NtscWhen video input is selected Information ScreenPresent Time SET Timer OFFTimer Screen Program Menu Date on OFF Mode SET Timer on Press Proceed for Program MenuAuto Timer Screen Direct Daily WeeklyCursor movement Setting Position Driver NO.1 Setting Position DriverMultiple Screens Align the cursor with icon 12 on the secondColor System Other Setting ScreensAlign the cursor with icon 13 of the second Press the / buttons and setBurning reduction function RGB3 ADJ ALL ResetGray Level SET ID no 256 SET noID Selection Screen Symptom Checks Remedy TroubleshootingPlasmaSync 42PD2 Model PX-42VP2A SpecificationsPlasmaSync 50PD1 Model PX-50VP1A Appendix Signal Identification For Raster PresetRGB Connections ApplicationCommunication Format Communication ParametersPage Page Page Page Page Page Page Page Page Cabinet dimensions Unit inchmm
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