LK204-25/VK204-25 Including LK204-25-422, LK204-25-USB, VK204-25-422, and VK204-25-USB Technical Manual Revision 1.5 PCB Revision: 3.0 or
10 USB Connections The USB connection is the quickest, easiest solution for PC development. After driver installation, the LVK204-25-USB will be acc
11 RS422 Module Figure 8: RS422 Connections Table 3: Standard Headers # Header Mate 1 RS422 16-30 AWG Wire 2 Alternate Power PCS 3 Keypad KPP4x4 4 G
12 Software The multiple communication protocols available and simple command structure of the LVK204-25 means that a variety of applications can be
13 uProject The Matrix Orbital alphanumeric display tuner, or uProject, is offered as a free download from the www.matrixorbital.ca support site. It
14 Hardware Standard Model Communication/Power Header Figure 11: Communication/Power Header Table 6: Communication/Power Pinout Pin Function 1 Vcc 2
15 Power Through DB9 Jumper In order to provide power through pin 9 of the DB-9 Connector you must connect the Power Through DB-9 Jumper labelled R17
16 USB Model Mini USB Connector Figure 13: Mini USB Connector Table 11: Mini USB Pinout Pin Function 1 Vcc 2 D- 3 D+ 5 Gnd The LVK204-25-USB comes
17 RS422 Model RS422 Header Figure 16: RS422 Header Table 14: RS422 Pinout Pin Function 1 Gnd 2 Rx (Y) 3 Inv Rx (Z) 4 Inv Tx (B) 5 Tx (A) 6 Vcc Th
18 Common Features General Purpose Outputs Figure 18: GPO Header Table 16: GPO Pinout Pin Function Pin Function 1 GPO 1 8 Gnd 2 GPO 1 9 Gnd 3 GPO 1
19 Keypad Header Figure 20: Keypad Header Table 18: Keypad Pinout Pin Function 1 Gnd 2 Row 1 3 Row 2 4 Row 3 5 Row 4 6 Row 5 7 Column 1 8 Column 2 9
2 Revision History Revision Description Author 1.5 Fixed Alternate USB Pinout Martino 1.4 Revision and correction to Colour in Ordering Options Mart
20 Troubleshooting Power In order for your Matrix Orbital display to function correctly, it must be supplied with the appropriate power. If the D2 p
21 Communication When communication of either text or commands is interrupted, try the steps below. • First, check the communication cable for cont
22 Commands 1. Communications 1.1. Changing the I2C Slave Address Dec Hex ASCII 254 51 FE 33 3 Address Address Address Immediately changes the I2C
23 2. Text 2.1. Auto Scroll On Dec Hex ASCII 254 81 FE 51 Q The entire contents of screen are shifted up one line when the end of the screen is r
24 2.7. Set Cursor Position Dec Hex ASCII 254 71 FE 47 G Column Row Column Row Column Row Sets the cursor to a specific position where the next tr
25 2.13. Blinking Block Cursor On Dec Hex ASCII 254 83 FE 53 S Displays a blinking block over the current cursor position. Can be used with unde
26 3. Special Characters 3.1. Creating a Custom Character Dec Hex ASCII 254 78 FE 4E N ID Data ID Data ID Data Creates a custom character. Each c
27 3.4. Save Start Up Screen Custom Characters Dec Hex 254 194 FE C2 ID Data ID Data Saves a custom character to memory for the start up screen or re
28 3.9. Initialize Horizontal Bar Dec Hex ASCII 254 104 FE 68 h Loads the horizontal bar graph custom character bank into memory. Horizontal bar
29 4. General Purpose Output 4.1. General Purpose Output Off Dec Hex ASCII 254 86 FE 56 V Number Number Number Turns the specified GPO off, sinkin
3 Contents Revision History ...
30 5. Dallas One-Wire 5.1. Search for a One-Wire Device Dec Hex 254 200 2 FE C8 02 Sends a search query to each of the up to 32 devices on the one
31 6. Keypad 6.1. Auto Transmit Key Presses On Dec Hex ASCII 254 65 FE 41 A Key presses are automatically sent to the host when received by the d
32 6.6. Set Auto Repeat Mode Dec Hex 254 126 FE 7E Mode Mode Sets key press repeat mode to typematic or hold. In typematic mode if a key press is h
33 7. Display Functions 7.1. Display On Dec Hex ASCII 254 66 FE 42 B Minutes Minutes Minutes Turns the display backlight on for a specified length
34 7.7. Set VFD Brightness** Dec Hex ASCII 254 89 FE 59 Y Brightness Brightness Brightness Immediately sets the text brightness. Default is 0. Bri
35 8. Data Security 8.1. Set Remember Dec Hex 254 147 FE 93 Switch Switch Allows changes to specific settings to be saved to the display memory. Wr
36 9. Miscellaneous 9.1. Write Customer Data Dec Hex ASCII 254 52 FE 34 4 Data Data Data Saves a user defined block of data to non-volatile memory
37 Appendix Command Summary Available commands below include identifying number, required parameters, the returned response and an indication of whet
38 Table 34: General Purpose Output Command Summary Name Dec Hex ASCII Parameters Response Remembered General Purpose Output Off 86 56 V Number None
39 Character Sets Figure 21: LCD Model European Character Set
4 General Purpose Outputs ... 18 Dall
40 Figure 22: VFD Model Japanese Character Set
41 Environmental Specifications Table 40: Environmental Limits LCD Standard LCD Extended (-E) VFD Standard VFD Extended (-E) Operating Temperature 0
42 Dimensional Drawings Figure 23: LCD Dimensional Drawing Figure 24: LVK204-25 Dimensional Drawing
43 Figure 25: LVK204-25-USB Dimensional Drawing Figure 26: LVK204-25-422 Dimensional Drawing
44 Ordering Part Numbering Scheme Table 45: Part Numbering Scheme LK -204 -25 -R -VPT -422 -E 1 2 3 4 5 6 7 Options Table 46: Display Options # D
45 Accessories Power Table 47: Power Accessories PCS Standard Power Cable Communication Table 48: Communication Accessories CSS4FT 4 ft. Serial C
46 Peripherals Table 49: Peripheral Accessories KPP4x4 16 Button Keypad KPP204A-XX* 15 Button Keypad Overlay Temperature Probe Dallas One-Wire Temp
47 Definitions ASCII: American standard code for information interchange used to give standardized numeric codes to alphanumeric characters. BPS: B
5 Introduction Figure 1: LK204-25 Display Figure 2: VK204-25 Display The LVK204-25 is an intelligent alphanumeric liquid crystal display designed
6 Quick Connect Guide Standard Module Figure 3: Standard Connections Table 1: Standard Headers # Header Mate 1 Communication/Power SCCPC5V/BBC 2 DB9
7 Serial Connections The serial interface provides a classic connection to the LVK204-25. The Communication/Power Cable is most commonly used for th
8 I2C Connections A more advanced connection to the LVK204-25 is provided by the I2C protocol setting. This is best accomplished using a breadboard
9 USB Module Figure 6: USB Connections Table 2: Standard Headers # Header Mate 1 Mini USB EXTMUSB3FT/ INTMUSB3FT 2 Alternate USB None Offered 3 Alte
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