Restrictions on I/O allocations
• Various functions listed in the table of specifications cannot be allocated to one I/O at the same time.
Allocations of input X and restrictions when using the high-speed counter function
When using the high-speed counter, it is necessary to set how to use the input by system registers.
C14/C30/C60 Tr type
Note) The X4, X5, X6 and X7 are also used for the home input of the pulse output. Use them only for
either one signal.
Allocations of output Y and restrictions when using the pulse output function
When using the pulse output function, it is necessary to set how to use the input/output by system
registers.
C14 Tr type
Deviation counter clear output
Note) The Y4 and Y5 of the medium-speed pulse are also used for the deviation counter clear signal.
The X4, X5 and X6 of the home input are also used for the input of the high-speed counter.
Use them only for either one signal.
Note:
• With the C14, if the home return is executed with the deviation counter clear for the pulse output CH0,
set the Y4 to the normal output by the system register.
• With the C14, if the home return is executed with the deviation counter clear for the pulse output CH1,
set the Y5 to the normal output by the system register.
• If the home return is executed, set the home input by the system register 401.
If the home return is executed without the setting, an operation error occurs.
C30/C60 Tr type
Deviation counter clear output
Note) The X4, X5, X6 and X7 of the home input are also used for the input of the high-speed counter.
Use them only for either one signal.
Note:
• If the home return is executed, set the home input by the system register 401.
If the home return is executed without the setting, an operation error occurs.
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, it is recommended to 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.
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