Mitsubishi Electric Q172CPU Programming Manual page 217

8 OUTPUT MODULE
(b) The following devices can be set as the cam No. setting device.
Name
Data register
Link register
(Note-1) : D800 to D1559 are dedicated devices of virtual servomotor axis,
synchronous encoder axis and output module "Cam" in the virtual mode.
Unused areas of virtual servomotor axis and cam axis can be used as an
user device.
(c) When the cam No. setting device value is changed during operation, it
changes to the cam No. changed in the "stroke amount/cam No. switching
position" set at the cam creating.
(3) Permissible droop pulse value
(a) This device is used to set the permissible droop pulse value of deviation
counter.
(b) The deviation counter value is continually checked, and if it becomes larger
than the permissible droop pulse value, the error detection signal
(M2407+20n) turns on.
However, since the cam shaft operation continues, execute the error
processing by user side.
(c) When the motor connected has feedback pulses of 131072 [PLS], set the
value which is found by dividing the actual permissible droop pulse value by
100.
(4) Output unit
(a) This device is used to set the unit ([mm]/[inch]/[PLS]) of cam.
(b) Set the same unit as used in the real mode (unit in the fixed parameters) for
the cam shaft.
Setting range
D800 to D3069
D3080 to D8191
W0 to W1FFF
8 - 30
(Note-1)