Matrix Orbital VFD2041 Legacy User Manual
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VFD2041 rev 2
2
Table of Contents
1. Introduction.............................................................................................................................. 4
1.1 What it Does ..................................................................................................................................... 4
1.2 What it Does Not Do ........................................................................................................................ 4
1.3 Setup for Testing .............................................................................................................................. 4
1.4 Trying Out your VFD2041 ............................................................................................................... 5
2. Connections and Configuration............................................................................................. 7
2.1 Connector Pinout .............................................................................................................................. 7
2.1.1 Power and I
2
C Connections .................................................................................................... 7
2.2
RS-232
Communications .................................................................................................................. 9
2.2.1 Connections ............................................................................................................................ 9
2.2.2 Applying Power via the RS-232 Connector.......................................................................... 10
2.2.3 Configuring RS-232 and I
2
C................................................................................................. 10
2.3 I
2
C Communications...................................................................................................................... 12
2.4 General Purpose Output.................................................................................................................. 12
3. Displaying
Text ...................................................................................................................... 14
3.1 General ........................................................................................................................................... 14
3.2 The Built-In Character Font............................................................................................................ 14
3.3 Writing Text to the Display ............................................................................................................ 15
3.4 Text Commands.............................................................................................................................. 15
4. Bar Graphs and Special Characters .................................................................................... 17
4.1 Command List ................................................................................................................................ 17
5. Miscellaneous
Commands ................................................................................................... 20
5.1 Command List ................................................................................................................................ 20
6. Appendix: Command Summary ........................................................................................... 22
6.1 General ........................................................................................................................................... 22
6.2 Issuing Commands.......................................................................................................................... 22
6.3 On Numbers.................................................................................................................................... 22
6.3.1 ASCII Characters.................................................................................................................. 23
6.4 Text Commands.............................................................................................................................. 23
6.5 Bar Graphs and Special Characters ................................................................................................ 24
6.6 Miscellaneous Commands .............................................................................................................. 26
7. Appendix: Specifications and Options................................................................................ 27