Matrix-orbital VFD2041 Legacy Manual do Utilizador

VFD2041Technical ManualRevision: 1.0

2.2.1 DB-9 ConnectionsA standard DB-9F is provided for RS-232 communications. Power may also be supplied via this con-nector if desired.Figure 9: RS-2

Figure 10: I2CConnector pinout is as follows;Figure 11: Power ConnectorTable 4: Connector PinoutPin 4 GroundPin 3 RxPin 2 TxPin 1 Vdc2.2.3 TTL communi

Figure 12: I2C2.2.4 Configuring RS-232 and I2CRS-232 baud rate and I2C address are configured by means of jumpers.Figure 13: RS-232 JumpersThe module is

Table 5: Serial Baud RatesBaud Rate Slave Address J3 J2 J1 J01200 50H out out out out52H out out out in2400 54H out out in out56H out out in in9600 58

/ write bit. If we take a standard Phillips 7bit address of 45hex this would be in binary 1000101. This is7bits. Matrix Orbital would describe the Phi

Figure 16: General Purpose OutputMaximum allowable current is 20 mA, which is enforced by the current limiting resistor. If the devicebeing switched h

NOTE The GPOs do not have any over current or over / under voltage protection socare must be taken when using them. For instance if the external devic

Figure 19: Character SetIn addition to the built in characters, users may define up to 8 special characters which, once defined,occupy positions 0x00 to

3.4 Text CommandsIn this section commands are identified by their names and decimal values. Hex and ASCII equivalentsare given in the summary.3.4.1 Aut

3.4.7 Turn on underline cursor (254 74)Turns on the underline cursor. The cursor shows the current text insertion point. Both underline andblinking cu

ContentsContents ii1 Introduction 11.1 What to Expect From the VFD2041 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 What Not to Ex

by means of the bar graph commands, or by simply issuing one of the ASCII values 0x00 to 0x07 (which isnot prefixed by the command byte, 254).4.1 Comma

4.1.6 Initialize large digits (254 110)This command defines the 8 special / user characters to be blocks suitable for use in drawing large digits.Any p

Table 8: Character Values1 2 3 4 56 7 8 9 1011 12 13 14 1516 17 18 19 2021 22 23 24 2526 27 28 29 3031 32 33 34 3536 37 38 39 40Cursor LineNOTE Note:

5.1.2 Set brightness (254 89 [brightness])This command sets the display’s brightness to [brightness], where [brightness] is a value between 0x00and 0x

5.1.7 Read module typeThis command will return, over the RS-232 interface in TTL levels only, the model type value of themodule. This command returns

6.3 On NumbersLike all computerized devices, the display operates with commands and values in the form of binarynumbers. These binary numbers are arra

This gives rise to the possibility of confusion when parameters are being set on the display. For example,the GPO ON and OFF commands use a number to

Command Syntax Default NotesUnderline cursor on FE 4A254 74254 ’J’off Turns on the un-derline cursor.Underline cursor off FE 4B254 75254 ’K’Turns off

Command Syntax NotesInitialize thin vertical bargraphFE 73254 115254 ’s’Initializes the user character set tomake narrow vertical bar graphs.Initializ

Command Syntax Default NotesDisplay on FE 42 [minutes]254 66 [minutes]254 ’B’ [minutes]on Display will stayon for [minutes].If [minutes] = 0display wi

4 Bar Graphs and Special Characters 164.1 Command List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174.1.1 Initi

Table 20: Electrical SpecificationsSupply Voltage 4.75 - 5.25 Vdc (optional 8 - 15 VDC)Supply Current 11 mA typicalTable 21: Optical CharacteristicsNum

Figure 20: Physical LayoutMatrix Orbital VFD2041 28

7.2 OptionsTable 22: Options Available on VFD2041Inverse Blue VFD WBInverse Yellow VFD IYWhite backlight with Gray glass (Ice Blue) GWExtended Tempera

Controller The micro-controller or PC used to control the MatrixOrbital display unitDB-9 The designation of a connector used in the RS-232 in-terface:

Scroll To view consecutive lines of data on the display screen.The term scroll means that once the screen is full, eachnew line appears at the bottom

1 IntroductionThe VFD2041 comes equipped with the following features;• 20 column by 4 line text display• Built in font with provision for up to 8 user

• A 9 or 25 pin RS-232 serial cable. If using a 25 conductor cable, a 9 to 25 pin adapter will be required.Figure 1: Connections for Testing1. Refer t

Figure 2: Electrical ConnectionsThe display has three connectors;Table 1: Connectors & FunctionsConnector Function2 pin General purpose output4 pi

Figure 3: Power ConnectorTable 2: Connector PinoutPin 4 GroundPin 3 SDA (I2C data) / RxPin 2 SCL (I2C clock) / TxPin 1 Vdc2.1.2 Five Volt ModulesIf th

Figure 5: Five Volt Power Cable2.1.3 Wide Voltage Range ModulesNOTE Do not use this cable unless the display module has the "Wide voltage range&q

2.1.4 Applying Power through the DB-9 ConnectorPower may be provided to the module by pin 9 of the DB-9 connector instead of through the 4-pin SIP.If