Matrix-orbital VK202-25 Legacy Bedienungsanleitung Seite 1

VK202-25 rev. 05 1 VK202-25 User Manual

VK202-25 rev. 05 10PC wiringDisplay module wiring+5 V+12 VGNDGND+12 V Figure 2-5 Wiring for 12 volt modules If you don't want to modify cable wir

VK202-25 rev. 05 11 Pin Number Direction Description LCD Host2 Data from LCD Data Out Tx Rx 3 Data to LCD Data In Rx Tx 5 - Ground gnd gndTh

VK202-25 rev. 05 12+ 5 V DC240 ohm current limiting resistorload+-+-GPO 1GPO 2GPO 3GPO 4GPO 5GPO 6Power Figure 2-8 General Purpose Outputs Maximum all

VK202-25 rev. 05 1310 - 10 0 uF1N400 1Re laycoilGPO+- Figure 2-10 Clamping a Relay

VK202-25 rev. 05 143. Displaying Text This chapter describes the various text-display commands in detail. A quick reference summary of all text comman

VK202-25 rev. 05 15In addition to the built-in characters, users may define up to 8 special characters (which, once defined, occupy positions 0x00 to

VK202-25 rev. 05 163.4.8 Turn off underline cursor (254 75) Turns off the underline cursor. Does not affect the blinking block cursor. 3.4.9 Turn o

VK202-25 rev. 05 174. Keypad Interface This chapter describes the keypad interface and associated commands in detail. 4.1 General The VK202-25 keypad

VK202-25 rev. 05 184.3 I2C Interface The keypad is read by I²C master read. In short, this means that a read of the module will always return the firs

VK202-25 rev. 05 19unwanted auto-repeatafter key-up.PollsKey dow nKey upauto-repeat clockvalid key stroke(before key up) Figure 4-2 Poll timing 4.5.2

VK202-25 rev. 05 2Table of Contents 1. Introduction...

VK202-25 rev. 05 205. Bar Graphs and Special Characters The VK202-25 includes the ability to draw bar graphs (either horizontal or vertical) and allo

VK202-25 rev. 05 21Custom characters occupy a 5 x 8 pixel matrix. Built-in characters are 5 x 7: the bottom row of pixels is normally reserved for the

VK202-25 rev. 05 226. Miscellaneous Commands The commands listed in this chapter don't readily fit in any of the other categories, or are used in

VK202-25 rev. 05 236.1.6 General purpose output off (254 86 [gpo #]) This command turns OFF any of the General Purpose Outputs (see section 2.2 for a

VK202-25 rev. 05 246.1.9 Read module type (254 55) This command will return a 1 byte hex value, over the RS-232 interface only, the model type value

VK202-25 rev. 05 256.1.13 Read Version Number 254 54) This command will return the firmware version number of the VK202-25 as a 1 byte hex value over

VK202-25 rev. 05 267. Appendix: Command Summary 7.1 General The operation of the VK202-25 is controlled by a simple and consistent command set. Comma

VK202-25 rev. 05 27Based on the table, the byte 01001011 can be represented in hex as 4B, which is usually written as any of 4Bh, 4BH, 4B hex or 0x4B.

VK202-25 rev. 05 28Command Syntax Default Notes Underline cursor on FE 4A 254 74 254 'J' off Turns on the underline cursor. Underline cur

VK202-25 rev. 05 297.6 Bar Graphs and Special Characters The commands in this section are used to define and display bar graphs and special character

VK202-25 rev. 05 35. Bar Graphs and Special Characters ... 20 5.1 Co

VK202-25 rev. 05 307.7 Miscellaneous Commands Table 7-4 Miscellaneous Commands Command Syntax Default Notes Clear display FE 58 254 88 254 'X&

VK202-25 rev. 05 31Command Syntax Default Notes 254 ':' [full] [empty] display will return 0xFE to host. When buffer reaches [empty] displ

VK202-25 rev. 05 328. Appendix: Specifications and Options 8.1 Specifications Environmental Specifications Standard Temperature Extended Temperatu

VK202-25 rev. 05 33 Figure 8-1 Physical Layout 8.2 Options Options Available on VK202-25 Extended Temperature E Wide Voltage V

VK202-25 rev. 05 349. Appendix: Glossary ASCII American Standard Code for Information Interchange. A 7 bit binary code representing the english alphab

VK202-25 rev. 05 35LCD Liquid Crystal Display Module Type Value This refers to the model number of the module. Pixel The smallest individually contr

VK202-25 rev. 05 41. Introduction Your VK202-25 has the following features:  20 column by 2 line text fluorescent display  built-in font with prov

VK202-25 rev. 05 5 A 5 V power supply.  a PC with a spare RS-232 port (COM1 or COM2).  A 9 or 25 pin RS-232 serial cable. If you use a 25 conduc

VK202-25 rev. 05 6FF 0x0C Clears the display and puts the cursor at the top left BS 0x08 Moves the cursor one position to the left and clears that

VK202-25 rev. 05 71.7 Manual Override Manual override should only be required in one instance. If for some reason the module is set at a baud rate whi

VK202-25 rev. 05 82. Connections 2.1 Connector Pinout Refer to the diagram below for this chapter. Key padConnectorPow erconnectorGeneralPurposeOutput

VK202-25 rev. 05 9Pin 2 SCL (I2C clock) Pin 3 SDA (I2C data) Pin 4 Ground 2.1.1.1 Five Volt Modules If the VK202-25 is used in a PC it is tempting