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General => Technical support => Topic started by: TST955 on February 14, 2005, 10:45:08 AM

Title: getting the 4x20 LCD to work??
Post by: TST955 on February 14, 2005, 10:45:08 AM

HI I have 1616+ ISTK
Got it communicating with the PC, OK, but cannot get the LCD to work. When trying to run the Clock or temperature demo program, all I get is the 2nd line and the 4th line on the LCD showing as solid blocks, I am sure it is a simple thing I am doing wrong. Can anyone advise !! ???

Title: Re:getting the 4x20 LCD to work??
Post by: support on February 14, 2005, 06:25:35 PM

Try power cycle the PLC with the LCD plugged in.  If it still doesn't work then you may have a damaged LCD or a bad LCD interface. Please contact the dealer or if you have purchased from us, contact sales@tri-plc.com to discuss about the cause of the problem.

Remember, the LCD is NOT hot-pluggable. So never plug/unplug the LCD into the PLC with the power on as that can damage the LCD display or the LCD driver interface on the PLC.

Title: Re:getting the 4x20 LCD to work??
Post by: TST955 on February 15, 2005, 12:05:19 PM

Power cycle gives same result. Will try new interface cable first. Thanks :)

Title: Re:getting the 4x20 LCD to work??
Post by: AlbertMartinez on March 01, 2005, 07:42:44 AM

Check and make sure your PLC is NOT in PAUSE mode.

Title: Re:getting the 4x20 LCD to work??
Post by: TST955 on March 01, 2005, 01:13:37 PM

OK thanks, how can I tell if the PLC is in pause mode, it seems to be running OK - is there a command to use for this ???

Title: Re:getting the 4x20 LCD to work??
Post by: AlbertMartinez on March 01, 2005, 10:20:54 PM

Make sure DIP-Switch #4 is not set to ON position. If DIP-Switch #4 is ON, it will set PLC to PAUSE mode. If the PAUSE red LED is lit/ON, then the PLC is in PAUSE mode. The PAUSE red LED is located near the PLC DC power connector.

Sincerely;

Albert Martinez

Title: Re:getting the 4x20 LCD to work??
Post by: TST955 on March 02, 2005, 11:00:46 AM

Thanks very much, I'll check this out and see what happens
 :)

Title: Re:getting the 4x20 LCD to work??
Post by: support on March 02, 2005, 01:40:23 PM

Your LCD could be faulty. If so, contact the dealer or us for a replacement.