6 HIGH-SPEED COUNTER MODULE REPLACEMENT
6 - 5
*1 I/O numbers of the modules mounted to the right of the QD62-H01 change, because the number of I/O occupied points for
the AD61 are different from the QD62-H01. Set the start I/O number for the module mounted to the right of the QD62-H01 to
the same number for the module before the replacement in the I/O assignment tab of the Q parameter setting window. The
program for the module before the replacement can be used.
*2 The rise/fall time of a pulse affects the counting speed. Countable counting speeds are as follows.
Counting a pulse greater than t = 50µs may result in a miscount.
• For the AD61 and QD62-H01 (common for 1-phase input and 2-phase input)
Rise/fall time
Common to 1-phase input and
2-phase input
t = 5µs 50KPPS
t = 50µs 5KPPS
tt
t= 5 s: 50KPPS
t=50 s: 5KPPS
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