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Using Counters (C) and the 8-Digit Counter (F) Section 3-7
counting speed using the following formula. The calculation
serves as a guide only, so allow a suitable margin in the actual
machine.
Maximum counting speed: 1,000,000/(cycle time in µs × 2.2) Hz
Note Even if the calculated maximum counting speed exceeds
150 Hz using this formula, the maximum counting speed
will be 150 Hz.
3-7-3 Parameter Monitor Screen Display
Counters (C)
8-Digit Counter (F)
Note 1. To reset the counter present value and counter bit status (ON/
OFF) when at power interruptions or when the operating mode is
changed, create a counter reset circuit when you first execute the
program. An example is shown below.
2. If the counter input and counter direction are input
simultaneously, place the output for the counter direction before
the output for the counter input in the program.
Counter bit status ( : OFF/● : ON)
Count input status
(: OFF/●: ON)
Counter setting
Counter present value
Reset input status
( : OFF/●: ON)
Counter direction specification
input status ( : OFF/● : ON)
RUN
Counter bit status ( : OFF/● : ON)
Count input status
(: OFF/● : ON)
Counter setting
Counter present value
Reset input status
( : OFF/● : ON)
Counter direction
specification input status
(: OFF/●: ON)
Counter reset
output
Counter direction
specification output
Output to counter input
Z211-E1-03.book Page 80 Friday, November 21, 2008 10:38 AM