Mitsubishi Electric MELSERVO-MR-J4 GF Series Instruction Manual page 222

• Feed current value
The feed current value of the cam axis is calculated as follows:
Feed current value = Cam standard position + Output value to cam axis current value per cycle
When the cam axis current value per cycle is in the middle of the specified stroke ratio data, the intermediate value is
calculated from the cam data before and after the value.
Cam axis
one cycle current value
Cam data
• Cam standard position
The cam standard position is calculated as follows:
The preceding cam standard position + Output value corresponding to "Input value = Cam axis one cycle length" - Output
value corresponding to "Input value = 0"
Cam axis one cycle
current value
Feed current value
For to-and-fro control, use the output value corresponding to "Input value = Cam axis length per cycle" that is equal to output
value corresponding to "Input value = 0".
Cam axis one cycle
current value
Feed current value
• Cam data start position
This is not used in the coordinate data type.
• Timing of applying cam control data
New values are applied to "Cam No." when bit 5 of Control DI2 (2D02h) turns on.
"Cam standard position" is updated when the cam axis current value per cycle passes through "0".
9 MANUFACTURER FUNCTIONS
220
9.5 Simple cam function
An intermediate value is calculated using the
data before and after the value.
One resolution or between
two coordinates
Cam standard
position
Cam standard
(Second cycle)
position
(First cycle)
Output value corresponding to
"Input value = Cam axis one cycle length" - Output value corresponding to "Input value = 0"
Cam standard position
(Does not change because the output value is 0.)
t
Cam standard
position
(Third cycle)
t
t
t