Restrictions on I/O allocations
• Various functions listed in the table of specifications cannot be allocated to one I/O at the same time.
• Except for the examples noted below, inputs and outputs that have been allocated to the various
functions cannot be allocated as normal inputs and outputs.
Exceptional cases (AFPX-PLS)
Example 1:
If no reset input is used in the high-speed counter function, X102 and X202 can be used as normal
inputs.
Example 2:
If no output is used to clear the differential counter in the pulse output function, Y102 and Y202 can be
used as normal outputs.
Restrictions on the execution of related instructions (F166 to F175)
• If an instruction related to the high-speed counter “F166 to F175” is executed, the control flag (special
internal relay: R9110 to R911D) corresponding to the channel used turns on.
• Please be aware that the control flag “in progress” may change while a scan is being carried out. To
prevent multiple read access to this special internal relay, you should generate a copy of it at the
beginning of the program.
• When the control flag for a channel turns on, another instruction using that same channel cannot be
executed.
10.2.3 Booting Time
The booting time is the time span from the execution of the instruction to the actual pulse output.
Pulse output instruction F171
(SPDH)
Trapezoidal control/home return
CW/CCW is set :
Pulse/direction is set :
Approx. 200 µs (with 30 steps)
Approx. 400 µs (with 60 steps)
Approx. 500 µs (with 30 steps)
Note)
CW/CCW is set :
Pulse/direction is set :
Approx. 30 µs
Approx. 330 µs
Note)
PWM output instruction F173
(PWMH)
Approx. 30 µs
Note) If pulse/direction is set, a waiting time (approx. 300 µs) is included from the time that the direction
output goes on until the pulse output instruction can be executed.
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