High−speed Counter/Pulse Output/ PWM OutputFP0
9 − 7
9.2 Specifications and Restricted Items
9.2.2 Functions and Restrictions
Channel
The same channel cannot be used by more than one function.
Example of prohibited application:
You cannot share CH0 with the high−speed counter and pulse output functions.
I/O number (input/output contact point)
The number allocated to each function cannot be used for normal input or outputs.
Example of prohibited application
When using CH0 for 2−phase inputting with the high−speed counter function, you
cannot allot X0 and X1 to normal inputs.
When using Y0 for the pulse output function, you cannot allot origin input X0 to a normal
input.
When using Y0 for the pulse output (with directional output operating) function, you
cannot allot Y2 (directional output) to a normal input or output.
When using the high−speed counter with a mode that does not use the reset input, you
can allot the inputs listed in parenthesis in the specifications table to a normal input.
Example of allowable application
When using the high−speed counter with no reset input and 2−phase input, you can
allot X2 to a normal input.
Restrictions on the execution of related instructions (F166 to F170)
When any of the instructions related to the high−speed counter (F166 to F170) are
executed, the control flag (special internal relay: R903A to R903D) corresponding to the
used channel turns on.
When the flag for a channel turns on, another instruction cannot be executed using that
same channel.
Example of prohibited application
While executing F166 (target value match on instruction) and flag R903A is in the on
state, F167 (target value match off instruction) cannot be executed with CH0.
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