HUST H2N Connection Manual
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• MPG Hand-wheel Test Mode (C056)
C056 = 1 (high), MPG Hand-wheel Test Mode ON.
C056 = 0 (low), MPG Hand-wheel Test Mode OFF.
The advantage of MPG test is that the user can test the program by doing actual
cutting using a MPG hand-wheel speed. Any errors in the program can be detected
and the product inspected before making mass production.
When MPG Hand-wheel Test Mode is on, the feed-rate is controlled by the speed of
hand-wheel and the MFO% knob setting. Refer to Sec. 8.9 of Operation Manual for
MPG hand-wheel test.
• Return to The Last Program Block (C057)
C057 = 1 (high), Return to the last program block function ON.
C057 = 0 (low), Return to the last program block function OFF.
When this function is turned on in EDIT mode, the tool will be returned to the last
program block where the program was interrupted. This function is also effective in
TEACH mode.
• Program EDIT and MCM EDIT Function Disabled (C058~C059)
C058 = 1 (high), Program EDIT mode is disabled.
C059 = 1 (high), MCM parameter EDIT mode is disabled.
• HOME Execution Command (C063)
HOME Limit Switch Signals (C064~C065)
C063 = 1 (high), execute HOME cycle.
C064 = 1 (high), X-axis limit switch is being touched.
C065 = 1 (high), Y-axis limit switch is being touched.
If C063 is set high (1), the control unit will execute HOME cycle according to the
axis selected by R232 and the direction by MCM #50~51. Then, the controller will
move the tool to find the HOME position according to the following steps. (Use X-
axis for explanation)
Step 1- The tool will go forward until C064 = 1 (high), the machine then stops.
While going forward, the feed-rate is by MCM #52 and the direction by
MCM #50.
Step 2- The tool will go backward at a feed-rate equal to 1/4 of the speed in Step 1
until C064 = 0 (low). The servo motor will decelerate to a stop.
Step 3- The tool will continue going backward at the HOME GRID speed as set by
MCM #54 to look for the encoder index. Once the encoder index is detected,
the motor stops and the HOME cycle is completed.
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