Matrix-orbital VFD2041 User Manual

VFD2041Technical ManualRevision: 2.1

Figure 10: Black - Aluminum Overlay1.3 Features• 20 column by 2 line text vacuum fluorescent display• Selectable communication protocol, RS-232 or I2C•

1.4 Connecting to a PCThe VFD2041 connects seamlessly to a PC and it is an excellent means of testing the functionality. Toconnect your display to a P

1.5 Installing the Software1.5.1 uProjectuProject was designed by Matrix Orbital to provide a simple and easy to use interface that will allow youto t

2 Hardware InformationRefer to the following diagram for this chapter:1 DB-9 Connector 5 Power / Data Connector2 Power Through DB9 Jumper 6 Legacy Con

Pin 2 Rx \ SCL (I2C clock)Pin3 Tx \ SDA (I2C data)Pin 5 GNDPin9 PWR (Must solder Power Through DB-9 Jumper. See table 1 on page 12 forpower requiremen

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WARNING Do not apply voltage through pin 9 of the DB-9 connectorAND through the Power/Data Connector at the same time.2.2 Power/Data ConnectorThePower

2.2.1 Legacy Data Connector JumpersTo reverse pins two and three of the Power/Data Connector remove the zero ohm resistors from theLegacy Data Connect

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2.4 General Purpose OutputsA unique feature of the VFD2041 is the ability to control relays and other external devices using aGeneral Purpose Output,

ContentsContents ii1 Getting Started 11.1 Display Options Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Accesso

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Table 2: Default ValuesContrast 128Backlight 255Baud Rate 19.2 kbpsI2C Slave Address 0x50Data Lock FalseRS232AutoTransmitData TrueNOTE The display mod

3.3 The display module is communicating, however text cannotbe displayed.• A common cause may be that the contrast settings have been set to low. The

that the transmission is over.The VFD2041 has some speed limitations, especially when run in I2C mode. Here are some considera-tions when writing I2C

4.2 Changing the I2C Slave AddressSyntaxHexadecimal 0xFE 0x33 [adr]Decimal 254 51 [adr]ASCII 254 “3” [adr]ParametersParameter Length Descriptionadr 1

Description This command sets the RS-232 port to the specified [speed]. The changetakes place immediately. [speed] is a single byte specifying the desi

ExamplesCrystal Speed 16 MhzDesired BAUD 13,500speed =crystalspeed8∗ DesiredBaud− 1speed = 148.15− 1speed =16,000, 0008∗ 13,500− 1speed = 147.15• LSB

5.1.1 Character SetFigure 21: Character Set5.1.2 Control CharactersIn addition to a full text set, the VFD2041 display supports the following ASCII Co

SyntaxHexadecimal 0xFE 0x51Decimal 254 81ASCII 254 “Q”Description When auto scrolling is on, it causes the display to shift the entiredisplay’s conten

5.6 Set Auto Line Wrap OnSyntaxHexadecimal 0xFE 0x43Decimal 254 67ASCII 254 “C”Description Enabling Auto Line Wrap will allow the cursor to automatica

5.9 Go Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265.10 Move Cursor Back . . . . . . . . . . . . .

Description This command will allow you to manually set the cursor position, whichcontrols the text insertion point, by specifying the [col] and [row]

Description This command will move the cursor forward one space. If thiscommand is sent when the cursor is at the bottom right position thecursor will

SyntaxHexadecimal 0xFE 0x4E [refID] [data]Decimal 254 78 [refID] [data]ASCII 254 “N” [refID] [data]ParametersParameter Length DescriptionrefID 1 Chara

Description New to the VFD2041 has added five non-volatile memory banks forcustom character storage. This is intended to allow you to create yourown cu

Description Using this command you may create the custom characters. that will bestored in memory bank zero, which will be used in the startup screen.

6.8 Initialize Large NumbersSyntaxHexadecimal 0xFE 0x6EDecimal 254 110ASCII 254 “n”Description This command will load the default large number charact

6.11 Place Horizontal Bar GraphSyntaxHexadecimal 0xFE 0x7C [Col] [Row] [Dir] [Length]Decimal 254 124 [Col] [Row] [Dir] [Length]ASCII 254 “|” [Col] [Ro

SyntaxHexadecimal 0xFE 0x76Decimal 254 118ASCII 254 “v”Description This command will load the wide vertical bar characters into the volatilememory. If

7.2 General Purpose Output OffSyntaxHexadecimal 0xFE 0x56 [Num]Decimal 254 86 [Num]ASCII 254 “V” [Num]ParametersParameter Length DescriptionNum 1 GPO

Description This command will set the startup state for the GPO on the next powerup. A value of one will cause the GPO to be off on the next startupwh

11 Command Summary 4211.1 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4211.2 Text . . . . . . . . .

Description This command turns the backlight off immediately. The backlight willremain off until a ’Display On’ command has been received.Remembered Y

9 Data Security9.1 IntroductionEnsuring that your VFD2041 display’s exactly what you want it to can be the difference between aprojects success and fa

9.3 Data LockSyntaxHexadecimal 0xFE 0xCA 0xF5 0xA0 [level]Decimal 254 202 245 160 [level]ParametersParameter Length Descriptionlevel 1 Sets the data l

9.4 Set and Save Data LockSyntaxHexadecimal 0xFE 0xCB 0xF5 0xA0 [level]Decimal 254 203 245 160 [level]ParametersParameter Length Descriptionlevel 1 Se

10.2 Read Version NumberSyntaxHexadecimal 0xFE 0x36Decimal 254 54ASCII 254 “6”Description This command will return a byte representing the version of

Description This command will return a hex value corresponding to the the modelnumber of the module see the following table:Hex Product ID Hex Product

11 Command Summary11.1 CommunicationsDescriptionSyntaxPageChanging the I2C SlaveAddressHexadecimal 0xFE 0x33 [adr]Decimal 254 51 [adr]ASCII 254 “3” [a

DescriptionSyntaxPageMove Cursor BackHexadecimal 0xFE 0x4CDecimal 254 76ASCII 254 “L”26Move Cursor ForwardHexadecimal 0xFE 0x4DDecimal 254 77ASCII 254

DescriptionSyntaxPageInitialize Narrow VerticalBarHexadecimal 0xFE 0x73Decimal 254 115ASCII 254 “s”32Initialize Wide VerticalBarHexadecimal 0xFE 0x76D

DescriptionSyntaxPageSet RememberHexadecimal 0xFE 0x93 [switch]Decimal 254 147 [switch]37Data LockHexadecimal 0xFE 0xCA 0xF5 0xA0 [level]Decimal 254 2

1 Getting StartedThe VFD2041 is an intelligent VFD display designed to decrease development time by providing aninstant solution to any project. With

Command DescriptionPageHex Dec ASCII0x4C 76 “L” Move Cursor Back 260x4D 77 “M” Move Cursor Forward 260x4E 78 “N” Creating a Custom Character 270x51 81

12 Appendix12.1 Specifications12.1.1 EnvironmentalTable 54: Environmental SpecificationsStandard Temperature Extended TemperatureOperating Temperature -

12.3 Physical LayoutFigure 22: Physical DiagramMatrix Orbital VFD2041 48

12.4 DefinitionsE Extended Temperature (-20C to 70C)VPT Wide Voltage with Efficient Switching Power Supply (+9 to +35Vdc)V Wide Voltage (+9 to +15Vdc)GW

1.2 AccessoriesNOTE Matrix Orbital provides all the interface accessories needed to get your displayup and running. You will find these accessories and

Figure 4: Breadboard CableFigure 5: Serial Cable 4FTMatrix Orbital VFD2041 3

Figure 6: Communication and 5V Power CableFigure 7: Silver - Aluminum MountingMatrix Orbital VFD2041 4

Figure 8: Black - Aluminum MountingFigure 9: Silver - Aluminum OverlayMatrix Orbital VFD2041 5