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 Motion Control Technology
   Lynton Manufacturing Service
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PARTS LIST
The L.M.S interface board.

The L.M.S interface board has been designed to provide a complete interface on a single board and all the  I/O signals are available  via a 50way ribbon cable  and screw  terminal connector. The driver for this board is built into the system software and all that is  required when installing the L.M.S  board is to set the  DIL switch and jumpers to select any of the computers free  I/O addresses and  IRQ levels.
 The board continually monitors the encoder inputs at 20Mhz  and stores each axis position in  a 24bit  counter. These counters have latched data lines when responding to computer requests so that counting is never interrupted.
  On board DACs  output the +/-10 volt command  signals to drive the axis motors to the required position.
  There are two system timers one provides synchronisation  timing to co-ordinate axis moves, and the other is a system watchdog timer which will shut down the axis drives if a positional error or system failure occurs.
   
Back to CNC project.
The L.M.S interface board will be available with a full parts list for  self- assembly. The main connector on the board is a stack-through  connector for the PC104  system.. The PC104 bus  is compatible with the PC 16bit  ISA bus and the adaptor card LMS ISA/PC104 (optional) allows the card to be installed into any PC with an ISA expansion slot. The ISA bus has become obsolete on the latest range of PC’s .The quest for larger memory and faster processing power  means an abundance of  old PCs at  knocked down prices. These machines a perfectly adequate for this application and can be given new  life as dedicated machine controllers.

   Alternative PC104 Adapter.

 

   RTD Embedded Technologies Inc.  Manufacture the DM16  which is  a  PC104 to ISA Bus Adapter.  This board provides full AT/XT connections

   between the PC104 and ISA bus and  has a 50-pin box header connector  which  extends  the LMS connections  to the back of a standard

    PC enclosure.       www.rtd.com/Accessories/dm16.htm