Inovance H3U Series - Page 398

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6 Positioning and Interpolation ZRN: Regression through the origin
As shown in the preceding gure, M100 is active, and drives Y0 to output 20,000 pulses at a frequency
of 1000 Hz. If the output is driven by M100 but the user wants to set M200 to ON to immediately start the
output (SET M8351 in the preceding gure), the high-speed output driven by M100 stops immediately, the
instruction driven by M200 occupies the high-speed output port Y0, and the set high-speed output starts
immediately.
6) The pulse output complete interrupt is not supported in speed control mode.
7) The pulse output is stopped.
The pulse output can be stopped by setting the "pulse output stop ag bit" of special elements. See the
following table.
Y0 Y1 Y2 Y3 Y4 Attribute
M8349 M8369 M8389 M8409 M8429 Pulse output stop ag
8) Clearing signal output
The "clearing signal output active ag bit" of special elements can be set to output a clearing signal. See
the following table.
Y0 Y1 Y2 Y3 Y4 Attribute
M8341 M8361 M8381 M8401 M8421
Valid output label for the DSZR/
ZRN and other clearing signals
The clearing signal can be specied by special registers and can be output through Y ports. For example, if
D8350 = 5, the port that outputs the pulse clearing signal is Y5. See the following table.
Y0 Y1 Y2 Y3 Y4 Attribute
D8350 D8370 D8390 D8410 D8430
Number of clearing elements (in
decimal)
5 (the
default
port is Y5)
6 (the
default
port is Y6)
7 (the
default
port is Y7)
8 (the
default
port is
Y10)
9 (the
default
port is
Y11)
◆
Program example
The action of this instruction is as follows: when M10 switches to ON, the PLC outputs pulses at 1000 Hz
through the Y0 high-speed output port to drive the stepping motor to return to the origin; when the DOG
signal switches to ON (the DOG slider touches the DOG contact), the output frequency decreases to 80 Hz,
and the PLC creeps at a low speed. When the DOG signal switches to OFF again, the PLC stops outputting
pulses through Y0, and writes 0 into the current value register. Besides, when the clearing signal output
function is ON, the clearing signal is output at the same time. Next, the execution complete ag (M8029) is
set to ON, and the pulse output monitoring switches to OFF.