LCD, extented commands and Labview

Hello,
I am using a serial LCD (https://www.sparkfun.com/products/9395) associated with a TTL-USB converter (http://www.miniinthebox.com/fr/cp2102-usb-2-0-vers-uart-ttl-convertisseur-6pin-serie-du-module_p3910... and labview with VI n°1. Sending simple commands such as the one in VI n°1 works fine. My problem is that I don't know how to send the Extended commands on page 2 here https://www.sparkfun.com/datasheets/LCD/SerLCD_V2_5.PDF.
For instance as far as I understand the data sheet I need to send 124 128 in order to turn off the brightness of the screen. If I type "124 128" in VI n°1 the LCD screen displays "124128". I get the same result with VI n°2.
Would anybody know what I could try next?
Thansk a lot.
User1979
Solved!
Go to Solution.
Attachments:
VI n°1.png ‏8 KB
VI n°2.png ‏9 KB

It looks like those values (124 and 128) are the decimal equivalent of the bytes to be transmitted 0x7C and 0x80. It is not possible to tell for sure from your images but most likely you are sending the ASCII text characters for "1" "2" "4" and "1" "2" "8". Since they show up on the display that is almost certainly what is happening.
In your second VI pop upon the string constants and select Hex Display from the pop up menu. Then type in the hex values 7C and 80.
Lynn

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Message Edited by AnalogKid2DigitalMan on 04-03-2007 03:05 PM
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"It’s the questions that drive us.”
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Thanks for replying my post I'm quite new to programming and LabVIEW and I didn't know that boolean functions work on numerical values.
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