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Topics - tipster

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1
Technical support / serial buffer
« on: August 08, 2005, 07:58:43 AM »
Is it possible, through some undocumented command/procedure to clear the serial buffer and/or test the buffer for content, prior to issuing the INPUT$ command ?
     It has been my experience that until an INPUT$ command is issued,it is possible for multiple <CR> terminated strings to reside in the buffer. I have a program where I am trying to read a string at a specific instance in the program, if I were to make multiple scans prior to reading the contents, then I am reading the first scan to enter the buffer, the next command reads the next string and so on.
Any help would be greatly appreciated














2
Technical support / Print commands
« on: November 15, 2004, 11:53:48 AM »
Is it possible to append a <LF> AFTER the default <CR> character, while using the PRINT command?
I am trying to send commands to an RS-485 device which requires this protocol     "command character",<CR>,<LF>

3
Technical support / Branching outputs
« on: March 19, 2003, 04:28:20 AM »
Is it possible to branch outputs and include contacts in each branch (to avoid having to create multiple circuits that are only different by one or two contacts),I have attempted to do this within the ladder editor with no success,with contacts I can branch fine just not ouputs with contacts (parallel outputs work ok too)

4
Technical support / LCD diplay problems
« on: October 13, 2003, 07:07:16 AM »
I have several TMD+1616 PLC's on which I am using the 4 x 20 LCD displays (purchased through TRI-PLC). all are wired according to specs in regards to the current limiting resistor and using the supplied interface cable.
  My problem is this,all of these units will periodically have diplay problems which usually consist of a complete black (blocked out) screen or a blank diplay altogether.  If On-line monitoring is done then the PC display is correct and the PLC always performs it's tasks even in this condition. A master reset function or a reset from on-line monitoring will not clear the display,the unit must be powered down. this usually occurs at least every other day on all PLC displays.  
   Any thoughts or suggestions?

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