try:
    import advantechapi
    io=advantechapi.AdvantechAPI()
    if io.okdevice==advantechapi.R_OK:
      print " device ok"
      PropFeatures=io.DEVICEFEATURES
      for feature in prop:
        print feature,Propfeature[feature]
except:
    print 'install advantech module and sw'    

1. read isolated digital inputs and ttl inputs

   # read bit 0 isolated input
   ok,txt,err_or_val = io.di_readbit( advantechapi.PORT_ID,0)
   if ok==0:
      print 'isolated input 0 is %d' % err_or_val
   else:
     print "error %s, subcode %d when reading", % (io.OPCODES[ok],err_or_val)

   # read bit 8 isolated input
   ok,txt,err_or_val = io.di_readbit( advantechapi.PORT_ID+1,0)
   if ok==0:
      print 'isolated input 8 is %d' % err_or_val
   else:
     print "error %s, subcode %d when reading", % (io.OPCODES[ok],err_or_val)

   # read bit 0 ttl input
   ok,txt,err_or_val = io.di_readbit( advantechapi.PORT_TTL,0)
   if ok==0:
      print 'ttl input 0 is %d' % err_or_val
   else:
     print "error %s, subcode %d when reading", % (io.OPCODES[ok],err_or_val)

   # read bit 8 ttl input
   ok,txt,err_or_val = io.di_readbit( advantechapi.PORT_TTL+1,0)
   if ok==0:
      print 'ttl input 8 is %d' % err_or_val
   else:
     print "error %s, subcode %d when reading", % (io.OPCODES[ok],err_or_val)

   # read byte 0 isolated output
   ok,txt,err_or_val = io.di_readbyte( advantechapi.PORT_ID)
   if ok==0:
      print 'isolated input byte 0 is %d' % err_or_val
   else:
     print "error %s, subcode %d when reading", % (io.OPCODES[ok],err_or_val)

   # read byte 1 isolated output
   ok,txt,err_or_val = io.di_readbyte( advantechapi.PORT_ID+1)
   if ok==0:
      print 'isolated input byte 1 is %d' % err_or_val
   else:
     print "error %s, subcode %d when reading", % (io.OPCODES[ok],err_or_val)

   # read byte 0 ttl output
   ok,txt,err_or_val = io.di_readbyte( advantechapi.PORT_TTL)
   if ok==0:
      print 'ttl input byte 0 is %d' % err_or_val
   else:
     print "error %s, subcode %d when reading", % (io.OPCODES[ok],err_or_val)

   # read byte 1 ttl output
   ok,txt,err_or_val = io.di_readbyte( advantechapi.PORT_TTL+1)
   if ok==0:
      print 'isolated input byte 1 is %d' % err_or_val
   else:
     print "error %s, subcode %d when reading", % (io.OPCODES[ok],err_or_val)

2.write isolated outputs and ttl outputs

   # write bit 0 isolated output
   ok,txt,err_or_val = io.do_writebit( advantechapi.PORT_ID,0,1)
   if ok==0:
      print 'isolated output 0 is %d' % 1
   else:
     print "error %s, subcode %d when writing, % (io.OPCODES[ok],err_or_val)

   # write bit 8 isolated output
   ok,txt,err_or_val = io.do_writebit( advantechapi.PORT_ID+1,0,1)
   if ok==0:
      print 'isolated output 8 is %d' % 1
   else:
     print "error %s, subcode %d when writing, % (io.OPCODES[ok],err_or_val)

   # write bit 0 ttl output
   ok,txt,err_or_val = io.do_writebit( advantechapi.PORT_TTL,0,1)
   if ok==0:
      print 'ttl output 0 is %d' % 1
   else:
     print "error %s, subcode %d when writing, % (io.OPCODES[ok],err_or_val)

   # write bit 8 ttl output
   ok,txt,err_or_val = io.do_writebit( advantechapi.PORT_TTL+1,0,1)
   if ok==0:
      print 'ttl output 8 is %d' % 1
   else:
     print "error %s, subcode %d when writing, % (io.OPCODES[ok],err_or_val)

   # write byte 0 isolated output
   ok,txt,err_or_val = io.do_writebyte( advantechapi.PORT_ID,0xff,1)
   if ok==0:
      print 'isolated output byte (bits 0..7) is %d (00000001)' % 1
   else:
     print "error %s, subcode %d when writing, % (io.OPCODES[ok],err_or_val)

   # write byte 1 isolated output
   ok,txt,err_or_val = io.do_writebyte( advantechapi.PORT_ID+1,0xff,1)
   if ok==0:
     print 'isolated output byte (bits 8..15) is %d (00000001)' % 1
   else:
     print "error %s, subcode %d when writing, % (io.OPCODES[ok],err_or_val)

   # write byte 0 ttl output
   ok,txt,err_or_val = io.do_writebyte( advantechapi.PORT_TTL,0xff,1)
   if ok==0:
      print 'ttl output byte (bits 0..7) is %d (00000001)' % 1
   else:
     print "error %s, subcode %d when writing, % (io.OPCODES[ok],err_or_val)

   # write byte 1 ttl output
   ok,txt,err_or_val = io.do_writebyte( advantechapi.PORT_ID+1,0xff,1)
   if ok==0:
     print 'ttl output byte (bits 8..15) is %d (00000001)' % 1
   else:
     print "error %s, subcode %d when writing, % (io.OPCODES[ok],err_or_val)

3. Analog IO

   da_writeanalog(channel,value):
      'ok,txt,error = pci.da_writeanalog(channel,value) - write analog value to specified channel'

   ad_readanalog(channel):
      'ok,txt,error|value = pci.ad_readanalog(channel) - read analog value from channel'