
5. AUTOMATIC OPERATION
B–63523EN–1/03
622
Forward movement is to execute a program in the forward direction
regardless of the rotation of the manual pulse generator (with the check mode
handle valid signal MCHK set to 0) or by rotating the manual pulse generator
in the positive direction (with the manual handle check signal set to 1).
If the check mode handle valid signal MCHK is set to 1, the program
execution speed is directly proportional to the number of manual pulse
generator rotations. When you turn the manual pulse generator in the
positive direction quickly, the speed increases; when you turn the manual
pulse generator slowly, the speed decreases. The travel distance per pulse
generated from the manual pulse generator can be changed by changing
the magnification in the same manner as for ordinary handle feed.
If the check mode handle valid signal MCHK is 0, program execution is
controlled in the same manner as for automatic operation.
Backward movement is to execute in the backward direction a program
once executed in the forward direction, by rotating the manual pulse
generator in the negative direction.
Backward program execution is possible only for those blocks that have been
executed in the forward direction. About 200 blocks can be executed in the
backward direction. The number of blocks that can be executed in the
backward direction varies depending on the contents of a specified program.
The backward program execution speed is directly proportional to the
number of manual pulse generator rotations. When you turn the manual
pulse generator in the negative direction quickly, the speed increases;
when you turn the manual pulse generator slowly, the speed decreases.
The travel distance per pulse generated from the manual pulse generator
can be changed by changing the magnification in the same manner as for
ordinary handle feed.
In memory operation mode, set check mode signal G0067#2 (MMOD) to
1 to place the CNC in check mode, then set the ST signal from 1 to 0.
Then, program execution starts.
If check mode handle valid signal G0067#2 (MCHK) is 1 at this point,
program execution in check mode is controlled by pulses generated from
the manual pulse generator so that operation is synchronized with these
pulses. If check mode handle valid signal MCHK is 0, program execution
is controlled in the same way as ordinary operation.
NOTE
1 To use the manual pulse generator for forward or backward
movement, place the CNC in check mode before starting
program execution. The check mode signal must not be
driven to 1 in a midway point of program execution.
2 If the signal is set to 0 in a midway point of a program, the
manual pulse generator is no longer used for the
subsequent forward or reverse movement.
D Forward movement
D Backward movement
Details
Operation
D Starting execution