Fuji Electric micrex-sx NP1F-MP1, User Manual

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7-17
7-3 Functions of Pulse Generation Mode
7-3-12 Original point return motion
• With the interrupt point positioning function and the phase-Z detect function of this module (NP1F-MP1/MP2), it is
possible to return to the original point.
• Original point return motion is activated when the interrupt detect signal is “1.”
• When original point return motion is started, set the phase-Z signal detect command to “1” after checking that the
origin LS input has become “1.”
• The command pulse register is not counted down until the phase-Z signal is detected after passing the origin LS.
After the phase-Z signal is detected, the number of pulses which is set in the command pulse register will be
output.
Set value of the command pulse register
(the shift length to original point)
f H
Frequency
Time
f L
“1”
Interrupt mode
(PC == > MP1/MP2)
“1”
Phase-Z signal detect command
(PC == > MP1/MP2)
“1”
Start command
(PC == > MP1/MP2)
ON
OFF OFF
This phase-Z is
detected.
Not accepted because origin
LS signal is “ON.”
Not accepted because phase-Z
detect command is “0.”
Origin LS
(external input)
“1”
Phase-Z signal detection
(PC <== MP1/MP2)
Phase-Z: Level detection
(external intput)
“1” “1” Positioning end
(PC <== MP1/MP2)
“1”
Command pulse zero
(PC <== MP1/MP2)
• The change-over between the original point returning speed frequency (fH) and the original point returning creep
speed frequency (fL) is made by the target frequency register rewrite command or speed change command sent
from the CPU module.