Matrix-orbital PK202-25 Manual do Utilizador

PK202-25Technical ManualRevision: 1.0

2.1.1 Power ConnectionsPower is applied via pin1 and ground via pin 4 as shown in the figure below. Power requirement is +5VDC ±0.25V. As an alternate

Figure 4: Wiring for 5V ModulesMatrix Orbital can supply an adapter cable designed for use with the display when it’s installed in a PC.The cable is w

Figure 6: Wiring for 12V ModulesMatrix Orbital can supply an adapter cable designed for use with the display module when it’s installedin a PC. The ca

Figure 8: RS-232 and Power ConnectorFigure 9: Power Applied via DB9The RS-232 connector on the PC cable is wired so that a standard ‘straight through’

5 329Figure 10: DB9 PinoutFor RS232 communication via the 4 pin connector, please see the figure and table below.1 23 4 12 34Figure 11: Power Connector

Figure 12: TTL SelectNote that this device uses signal levels from 0V to + 5V on the TTL setting.Table 6: RS-232 PinoutPin Number Direction Descriptio

Table 7: Connector PinoutPin 1 +5.0 VDC (+7 to +15 VDC with wide voltage option)Pin 2 Rx (receive data)Pin 3 Tx (transmit data)Pin 4 Ground2.2.3 I2C C

Table 8: Connector PinoutPin 1 +5.0 VDC (+7 to +15 VDC with wide voltage option)Pin 2 I2C SCL (clock)Pin 3 I2C SDA (data)Pin 4 Ground2.2.4 ACKThe idea

GNDData+5VFigure 16: 1-Wire Pinout2.3 General Purpose OutputsThe display has six general purpose outputs. These are provided to control relays or othe

Figure 18: Bypassing 240 ohm ResistorNOTE The GPOs do not have any over current or over / under voltage protection so caremust be taken when using the

ContentsContents ii1 Introduction 11.1 What to Expect From the PK202-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 What Not to E

3.1 GeneralText is displayed on the PK202-25 using the built in 5x8 dot matrix font. In addition, there are up to 8user defined characters.3.2 The Buil

fonts.3.3 Writing Text to the DisplayWhen the display receives a character, it displays that character at the position currently defined. Thenext chara

3.4.5 Set cursor position (254 71 [column] [row])This command sets the cursor position (text insertion point) to the [column] and [row] specified. Colu

3.4.12 Cursor right (254 77)Moves the cursor one position to the right but does not erase any character that may be in that position.NOTE This command

NOTE The keypads may be laid out in a different pattern. If this is the case, the userwill need to interpret the key codes differently. Also included

4.5 Keypad CommandsSome commands, marked with an “R”, may be "Remembered" to set new defaults that will be in effecteach time the unit is po

4.5.3 Auto transmit keypresses on (254 65) (R)In this mode, all keypresses are sent immediately to the host system without the use of the poll keypadc

be defined or redefined at any time by issuing the commands shown in this section. Once defined, they maybe used either by means of the bar graph command

5.1.6 Define custom character (254 78 [c] [8 bytes])The display allows up to 8 user defined (custom) characters. These characters occupy the first 8 (0x0

5.1.7 Initialize Medium Digits (254 109)This command defines the 8 special characters to be blocks suitable for use in drawing medium digits.Any previo

4 Keypad Interface 194.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194.2 Connections . . . . .

6.1.3 Set brightness (254 89 [brightness]) (R)Brightness is set to 100% by default. his commands sets the display’s backlight brightness to [bright-ne

Table 13: Default ScreenCharacter 1 Character 20Character 21 Character 40If sending more than 10 characters to be stored, add in a ~10ms per character

Table 14: Module ValuesLCD0821 - 0x01 PK202-25 - 0x LCD2041 - 0x05LCD4021 - 0x06 LCD4041 - 0x07 LK202-25 - 0x08LK204-25 - 0x09 LK404-55 - 0x0A VFD2021

6.1.16 Read Version Number (254 54)This command will return the firmware version number of the display as a 1 byte hex value over RS-232only.6.2 Flow C

7.1 Device IdentificationEach 1-wire device contains a unique 64-bit address in which to identify them with. The address isguaranteed to be unique from

• Read ROM [33h]: All devices will begin transmitting their address after this command. Thiscommand will only succeed when there is one device on the

Table 17: 1-Wire FlagsBit Description76 Unused5 (0 for future compatibility)43 Add a CRC8 to the end of the transmitted data2 (0 for future compatibil

Table 19: Search Return PacketOffset(Bytes)Offset(Bytes)Description0 2 0x232A - Preamble2 1 0x8A - Packet is 10 bytes long, an-other address will foll

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

Table 21: Example of an ASCII TableThe letter A has a value of 65 Decimal or 41 HexThe letter A has a value of 97 Decimal or 61 HexThe number 0 has a

7 1-Wire Commands 297.1 Device Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307.2 Protocol . . . . . . .

Command Syntax Default NotesSet cursor position FE 47 [col] [row] 254 71[col] [row] 254 ’G’ [col][row]N/A Moves cursorto the specifiedcolumn and row.Th

8.5 Keypad Interface CommandsTable 24: Keypad Interface CommandsCommand Syntax Default NotesAuto repeat mode on FE 7E [0x00|0x01] 254126 [0|1]254 ’~’

8.6 Bar Graphs and Special CharactersThe commands in this section are used to define and display bar graphs and special characters.Table 26: Bar Graphs

Command Syntax NotesDraw medium digits FE 6F [r][c][digit]254 111 [r][c][digit]254 ’o’ [r][c][digit]Draws a medium digit in [row] and[column] using th

Command Syntax Default NotesRemember FE 93 [0|1]254 147Off Turn the “remem-ber” function on[1] or off [0].Set brightness and save FE 91 [brightness]24

Command Syntax Default NotesRemember FE 93 [0|1]254 147Off Turn the “remem-ber” function on[1] or off [0].Read module type FE 37254 55254 ’7’see table

9 Appendix: Specifications and Options9.1 SpecificationsTable 30: Environmental SpecificationsStandard Temperature Extended TemperatureOperating Temperat

Figure 23: Physical Layout9.2 OptionsTable 33: Options Available on PK202-25Extended Temperature EWide Voltage V10 Appendix: GlossaryTable 34: Appendi

ASCII American Standard Code for Information Interchange.A 7 bit binary code representing the English alpha-bet, decimal numbers and common punctuatio

Hexadecimal Refers to the base-16 number system, which consistsof 16 unique symbols: the numbers 0 to 9 and the let-ters A to F. For example, the deci

1 IntroductionThe PK202-25 comes equipped with the following features:• 20 column by 2 line text PLED display• Built in font with provision for up to

Version Number This refers to the firmware revision number of themodule.Volatile Memory Temporary memory. Once the power supply is turnedoff volatile m

1.3 Keypad InterfaceThe keypad interface takes row / column input and converts it to ASCII characters, which are deliveredout the RS-232 or I2C port t

4. Connect the power connector, making sure that the +5V goes to V+. Turn on the power: the displayshould come on.1.5 Trying Out the PK202-25The unit

2. With the display connected to the PC, plug in the keypad. If the connector has fewer pins than the oneon the display, center it as well as possible

GPOs Configuration JumpersPower/Data Connector DB9 ConnectorKeypad Connector1-Wire ConnectorFigure 2: Electrical ConnectionsThe display has four conne