NAiS FP Series User Manual page 83

High - speed Counter and Pulse Output Functions
Restrictions for maximum counting speed and pulse output frequency
The counting speed when using the high- speed counter function will differ depending
on the counting mode as shown in the table on page 6 - 5.
Example 1:
While in the decremental input mode and using the two
channels CH0 and CH1, CH0 and CH1 can be used up to 30 kHz.
Example 2:
While in the two- phase input mode and using the two channels
CH0 and CH2, CH0 and CH2 can be used up to 15 kHz.
The maximum output frequency when using the pulse output function will differ
depending on the number of channel being used as shown in the table on page 6 - 6.
Example 1:
When using only one channel, CH0, up to 100 kHz can be used.
Example 2:
When using two channels, CH0 and CH2, up to 60 kHz may be
used for each channel.
Example 3:
When linear interpolation control is being carried out on CH0
and CH2, a composite speed of up to 100 kHz may be used for
the pulse output function. When circular interpolation control is
being carried out, the maximum composite speed that may be
used is 20 kHz.
If using both the pulse output function and the high- speed counter function, the
following combinations result.
Example 1:
When using one pulse output channel with a maximum output of
60 kHz, the maximum counting speed of the high- speed counter
is 20 kHz in the single- phase and three channels mode.
Example 2:
When using one pulse output channel with a maximum output of
60 kHz, the maximum counting speed of the high- speed counter
is 15 kHz in the two- phase and one channel mode.
Note
The linear and circular interpolation control functions can be
used with the C32T2 control unit only.
6 - 8
FPΣ