Basic description of PCL series
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POINT 7. Other useful functions
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Manual operation input
The manual operation input can be used to allow an operator to operate a motor with switches or a manual
pulsar, instead of through a CPU.
Using a manual pulsar or switch input, each axis can be operated independently.
First, write a start command for manual operation mode with a CPU. Then the PCL can output pulses in
response to switches or pulsar inputs.
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Synchronous start control
A synchronous start can be executed in the following two conditions.
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Start when another axis stops
With this function, when one axis or multiple axes stop (for example when the X and U axes stops or when
the X, Y, and Z axes stop), this can be set as the condition for starting another axis.
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Start on an internal synchronous signal
There are nine types of timing for the internal synchronous signal (comparator conditions are met,
start/complete acceleration, start/complete deceleration). Select one of these.
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CPU-I/F
You can select one of the following four types as a CPU hardware interface.
1) For a Z80 CPU 8-bit
2) For a 8086 CPU 16-bit
3) For an H8 CPU 16-bit
4) For a 68000 CPU 16-bit
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Idling pulse outputs
When starting with acceleration/deceleration this function makes it possible to accelerate to the initial speed
after a few pulses of operation (idling pulses). By setting the initial speed higher with acceleration/deceleration
control, a stepper motor can be protected from encountering an out-of-step condition.
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Backlash correction / slip correction
The backlash/slip correction outputs a number of correction pulses at correction speed just before starting a
command operation.
The backlash correction function is activated each time the feed direction is changed. The slip correction
function is activated just before a command operation, regardless of the operation direction.
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Vibration restriction function
This function adds one pulse of reverse operation and one pulse of forward operation just before completing a
command operation, so as to limit vibration when stopping.
The output timing for adding the pulses can be set in the register.
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Simultaneous start / simultaneous stop
Multiple axes controlled by one IC or multiple axes controlled by multiple ICs can be started simultaneously by
commands or external signals.
Also, this function can stop all the axes at the same time on a command, an external signal, or by an error stop
on any axis.
