NAME

       opto_ac5 - Realtime driver for opto22 PCI-AC5 cards

SYNOPSIS

       loadrt opto_ac5  [portconfig0=0xN] [portconfig1=0xN]

DESCRIPTION

       These  pins  and  parameters are created by the realtime opto_ac5 module.  The portconfig0
       and portconfig1 variables are used to configure the two ports of each card.  The first  24
       bits  of a 32 bit number represent the 24 i/o points of each port.  The lowest (rightmost)
       bit would be HAL pin 0 which is header connector pin 47.  Then next bit to the left  would
       be  HAL pin 1, header connector pin 45 and so on, until bit 24 would be HAL pin 23, header
       connector pin 1.  "1" bits represent output points.  So channel 0..11 as inputs and 12..23
       as  outputs would be represented by (in binary) 111111111111000000000000 which is 0xfff000
       in  hexadecimal.   That  is  the   number   you   would   use,   e.g.,   loadrt   opto_ac5
       portconfig0=0xfff000

       If  no  portconfig  variable  is  specified the default configuration is 12 inputs then 12
       outputs.

       Up to 4 boards are supported.  Boards are numbered starting at 0.

       Portnumber can be 0 or 1. Port 0 is closest to the card bracket.

PINS

       opto_ac5.[BOARDNUMBER].port[PORTNUMBER].in-[PINNUMBER] OUT bit
       opto_ac5.[BOARDNUMBER].port[PORTNUMBER].in-[PINNUMBER]-not OUT bit
              Connect a HAL bit signal to this pin to read an  i/o  point  from  the  card.   The
              PINNUMBER represents the position in the relay rack.  E.g., PINNUMBER 0 is position
              0 in a opto22 relay rack and would be pin 47 on the 50 pin header  connector.   The
              -not pin is inverted so that LOW gives TRUE and HIGH gives FALSE.

       opto_ac5.[BOARDNUMBER].port[PORTNUMBER].out-[PINNUMBER] IN bit
              Connect  a  HAL  bit  signal to this pin to write to an i/o point of the card.  The
              PINNUMBER represents the position  in  the  relay  rack.   E.g.,  PINNUMBER  23  is
              position  23  in  a  opto22  relay  rack  and  would  be pin 1 on the 50 pin header
              connector.

       opto_ac5.[BOARDNUMBER].led[NUMBER] OUT bit
              Turns one of the on board LEDS on/off. LEDS are numbered 0 to 3.

PARAMETERS

       opto_ac5.[BOARDNUMBER].port[PORTNUMBER].out-[PINNUMBER]-invert W bit
              When TRUE, invert the meaning of the corresponding -out pin so that TRUE gives  LOW
              and FALSE gives HIGH.

FUNCTIONS

       opto_ac5.0.digital-read
              Add this to a thread to read all the input points.

       opto_ac5.0.digital-write
              Add this to a thread to write all the output points and LEDS.

BUGS

       All boards are loaded with the same port configurations  as the first board.

SEE ALSO

       http://wiki.linuxcnc.org/cgi-bin/wiki.pl?OptoPciAc5