33
Preset Mode
Section 4-5
Upper and Lower Limits
and Output Pattern
Upper and lower limits can be within a range of 0 to the maximum count value
set.
Outputs 7 to 0 correspond to the rightmost 8 bits (07 to 00) for the output pat-
tern.
For the data configuration of the output pattern, refer to the output pattern in
linear mode.
Both internal and external outputs or only eight internal outputs can be speci-
fied.
It is possible to preset 16 ranges, any of which can be enabled or disabled.
External outputs can be enabled or disabled.
A maximum of three ranges and a present counter value can be changed by
transferring data even when the High-speed Counter Unit is in operation.
4-5
Preset Mode
Note
The High-speed Counter Unit is in decrement counting operation in this mode.
Therefore, sensor inputs such as encoder inputs to the High-speed Counter
Unit must be in decrement mode.
The High-speed Counter Unit in this mode counts down the number of pulses
whenever a counter input is turned ON beginning with a preset value. Both
counters 1 and 2 have three external outputs that will be turned ON and OFF
while the count is being decremented and an external output that will be
turned ON when the High-speed Counter Unit finishes counting the number of
pulses.
External outputs 0 to 3 are for counter 1 and external outputs 4 to 7 are for
counter 2.
Bit 01 is a flag of counter 2.
In the above chart, horizontal lines express count values for external outputs
0, 1, 2, 4, 5, and 6 and timing for external outputs 3 and 7.
Pulse input
Counter preset value
Count value
External output 0/4
Start
Word n bit 00 (01)
External output 1/5
External output 2/6
External output 3/7
*
*
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Содержание C200H-CT021
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