Matrix Orbital VK202-25 Manuale utente

VK202-25

Technical Manual

Revision: 3.0

Contents

Contents ii

1 Getting Started 1

1.1 DisplayOptionsAvailable ................................... 1

1.2 Accessories........................................... 2

1.3 Features............................................. 6

1.4 ConnectingtoaPC....................................... 7

1.5 InstallingtheSoftware ..................................... 8

1.5.1 uProject......................................... 8

2 Hardware Information 9

2.1 DB-9Connector......................................... 9

2.1.1 Power Through DB-9 Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2 Power/DataConnector ..................................... 10

2.3 ProtocolSelectJumpers..................................... 11

2.4 GeneralPurposeOutputs.................................... 12

2.5 Dallas1-WireBridge...................................... 13

2.6 ManualOverride ........................................ 13

2.7 KeypadInterfaceConnector .................................. 14

3 Troubleshooting 15

3.1 The display does not turn on when power is applied. . . . . . . . . . . . . . . . . . . . . . . 15

3.2 The display module is not communicating. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3 The display module is communicating, however text cannot be displayed. . . . . . . . . . . 16

4 Communications 16

4.1 Introduction........................................... 16

4.1.1 I2CCommunicationSummary............................. 16

4.1.2 SerialCommunication ................................. 17

4.2 Changing the I2CSlaveAddress ................................ 17

4.3 ChangingtheBaudRate .................................... 18

4.4 Setting a Non-Standard Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5 Text 20

5.1 Introduction........................................... 20

5.1.1 CharacterSet...................................... 21

5.1.2 ControlCharacters................................... 21

5.2 AutoScrollOn ......................................... 21

5.3 AutoScrollOff ......................................... 21

5.4 ClearScreen........................................... 22

5.5 ChangingtheStartupScreen .................................. 22

5.6 SetAutoLineWrapOn..................................... 22

5.7 SetAutoLineWrapOff..................................... 23

5.8 SetCursorPosition....................................... 23

Matrix Orbital VK202-25 ii

5.9 GoHome ............................................ 23

5.10MoveCursorBack ....................................... 24

5.11MoveCursorForward...................................... 24

5.12UnderlineCursorOn ...................................... 24

5.13UnderlineCursorOff...................................... 24

5.14BlinkingBlockCursorOn ................................... 25

5.15BlinkingBlockCursorOff ................................... 25

6 Special Characters 25

6.1 Introduction........................................... 25

6.2 CreatingaCustomCharacter.................................. 25

6.3 SavingCustomCharacters ................................... 26

6.4 LoadingCustomCharacters .................................. 27

6.5 Save Startup Screen Custom Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.6 InitializeMediumNumber ................................... 28

6.7 PlaceMediumNumbers .................................... 28

6.8 InitializeHorizontalBar .................................... 28

6.9 PlaceHorizontalBarGraph................................... 29

6.10InitializeNarrowVerticalBar.................................. 29

6.11InitializeWideVerticalBar................................... 30

6.12PlaceVerticalBar........................................ 30

7 General Purpose Output 31

7.1 Introduction........................................... 31

7.2 GeneralPurposeOutputOff .................................. 31

7.3 GeneralPurposeOutputOn................................... 31

7.4 SetStartupGPOstate...................................... 31

8 Dallas 1-Wire 32

8.1 Introduction........................................... 32

8.2 Searchfora1-WireDevice................................... 32

8.3 Dallas1-WireTransaction ................................... 33

9 Keypad 34

9.1 Introduction........................................... 34

9.1.1 I2CInterface ...................................... 35

9.1.2 RS232Interface .................................... 35

9.2 AutoTransmitKeyPressesOn................................. 35

9.3 AutoTransmitKeyPressesOff................................. 35

9.4 PollKeyPress.......................................... 36

9.5 ClearKeyBuffer ........................................ 36

9.6 SetDebounceTime....................................... 37

9.7 SetAutoRepeatMode ..................................... 37

9.8 AutoRepeatModeOff ..................................... 38

9.9 AssignKeypadCodes...................................... 38

Matrix Orbital VK202-25 iii

10 Display Functions 39

10.1Introduction........................................... 39

10.2DisplayOn ........................................... 39

10.3DisplayOff ........................................... 40

10.4SetVFDBrightness....................................... 40

10.5SetandSaveVFDBrightness.................................. 40

11 Data Security 41

11.1Introduction........................................... 41

11.2SetRemember.......................................... 41

11.3DataLock............................................ 42

11.4SetandSaveDataLock..................................... 44

11.5WritestheCustomerData.................................... 44

11.6ReadstheCustomerData.................................... 44

12 Miscellaneous 44

12.1Introduction........................................... 44

12.2ReadVersionNumber...................................... 45

12.3ReadModuleType ....................................... 45

13 Command Summary 46

13.1Communications ........................................ 46

13.2Text ............................................... 47

13.3SpecialCharacters ....................................... 48

13.4GeneralPurposeOutput..................................... 48

13.5Dallas1-Wire.......................................... 49

13.6Keypad ............................................. 49

13.7DisplayFunctions........................................ 50

13.8DataSecurity .......................................... 50

13.9Miscellaneous.......................................... 50

13.10CommandByNumber ..................................... 51

14 Appendix 52

14.1Speciﬁcations.......................................... 52

14.1.1 Environmental ..................................... 52

14.1.2 Electrical........................................ 52

14.2PhysicalLayout......................................... 53

14.3OpticalCharacteristics ..................................... 54

14.4Deﬁnitions............................................ 54

14.5ContactingMatrixOrbital.................................... 54

Matrix Orbital VK202-25 iv

1 Getting Started

Figure 1: VK202-25

The VK202-25 is an intelligent VFD display designed to decrease development time by providing an

instant solution to any project. With the ability to communicate via serial RS-232/TTL and I2C protocols,

the versatile VK202-25 can be used with virtually any controller. The ease of use is further enhanced by

an intuitive command structure to allow display settings such as brightness, and baud rate to be software

controlled. Additionally, up to thirty-two custom charaters, such as character sets for bar graphs, medium

and large numbers, may be stored in the non-volitile memory to be easily recalled and displayed at any time.

1.1 Display Options Available

The VK202-25 is complimented with a wide selection of ﬁlters including blue, green, grey and red. If the

VFD will be in direct sunlight, the grey ﬁlter will prevent the displayed text from ’washing out’. Extended

voltage, and temperature options are also available, to allow you to select the display which will best ﬁt your

project needs.

Figure 2: VK202-25 Filter Options

Matrix Orbital VK202-25 1

1.2 Accessories

NOTE Matrix Orbital provides all the interface accessories needed to get your display

up and running. You will ﬁnd these accessories and others on our e-commerce website at

http://www.matrixorbital.com. To contact a sales associate see Section 14.5 on page 54 for

contact information.

Figure 3: 5V Power Cable Adapter

Figure 4: 12V Power Cable Adapter (V/VPT Models)

Matrix Orbital VK202-25 2

Figure 5: Breadboard Cable

Figure 6: Serial Cable 4FT

Matrix Orbital VK202-25 3

Figure 7: Communication and 5V Power Cable

Figure 8: Aluminum Mountings

Matrix Orbital VK202-25 4

Figure 9: Keypad Mountings

Figure 10: Keypad Mounting

Figure 11: Mounting Kits

Matrix Orbital VK202-25 5

Figure 12: 4X4 Keypad

1.3 Features

•20 column by 2 line text vacuum ﬂuorescent display

•Selectable communication protocol, RS-232 or I2C

•Optional One-wire interface

•Six, 5V -20mA, general purpose outputs for a variety of applications

•Lightning fast communication speeds, up to 57.6 kbps for RS-232 and 400 kbps for I2C

•Default 19.2 kbps serial communication speed

•Extended temperature available for extreme environments of -40C to 85C

•Extended voltage and efﬁcient power supply available

•Built in font with provision for up to 8 user deﬁned characters

•Use of up to 127 modules on the same 2 wire I2C interface

•1-wire bus that is capable of communicating with many devices over a single wire plus a ground

refernce

•Fully buffered so that no delays in transmission are ever necessary

•Ability to add a customized splash / startup screen

•Software controlled brightness with conﬁgurable time-out setting up to 90 minutes and software con-

trolled speed

•Use of up to a 25 key keypad with a 10 key buffer

•Horizontal or vertical bar graphs

•Extended temperature option

•Fits Matrix Orbital’s mountings without any modiﬁcations

Matrix Orbital VK202-25 6

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