'This program allows the user to perform speed control
'using the analog input on the MDI.

S5=9          'sets analog input to accept 0-5Vdc.
S1=0,1        'sets I/O point 1 to general
              'purpose output
A=2000000     'acceleration set to
              '2000000 microsteps/sec/sec
D=2000000     'deceleration set to
              '2000000 microsteps/sec/sec
R4=20         'deadband

PG 1             'initiate program at address 1
   LB SU         'startup label. Program executes on power up
   LB ZZ         'label called ZZ
      R1 = I5    'register 1 set to analog input value
      CL ab	     'computes new velocity by calling
                 'sub at label ab
      SL R3      'slew at the value of register 3
      H 10       'wait 10 milliseconds
      BR ZZ      'branch to the label called ZZ
      E          'end of ZZ routine
   LB ab
      R1 = R1-508    'routine to determine
                     'direction and remove deadband
      R2 = 1         'offset from joystick center plus
      BR a1, R1>=0   'get dir of r1
      R2 = -1        'negative direction minus
      R1 = R1 * R2   'get abs of r1
   LB a1
      BR A2,R1