July 2004
Intermediate to advanced
352 pages
9h 30m
English
Content preview from Mitsubishi FX Programmable Logic Controllers, 2nd Edition
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//INTEGRAS/ELS/PAGINATION/ELSEVIER UK/PLC/3B2/FINALS-7-6-04/0750656794-CH023.3D – 252 – [247–264/18]
19.6.2004 9:18PM
As Counter C235 has been selected, i.e. its coil has been reserved for high-speed
counting, then each time a high-speed pulse is applied to Input X0, Counter C235 will be
incremented.
It can be seen from the above diagram that Input X0 is not shown, as it is not scanned
during the execution of the ladder diagram program.
When ten pulses have been applied to Input X0, Counter C235 will operate and its
contacts can then be used to drive an output, i.e. turn Y0 ON, or execute an instruction.
23.7 Maxi mum total counti ng frequency
If all ...
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