Focus HMI PLC USER MANUAL
Fultek Kontrol Sistemleri San. Ve Tic. Ltd. Sti.
Address: Buyuksehir Mah. Cumhuriyet Cad. Ekinoks E2 Blok K:2 D:8 Beylikduzu / ISTANBUL
Phone: +90 212 871 0128 / Email: [email protected] / Web site: www.fultek.com.tr
The frequency is 10 times the value written to this variable.
The period is a cycle of frequency.
The %tON setpoint that controls the PWM logic high state can be at a maximum
resolution of 16 bits (between 0-65535) depending on the frequency. When the
frequency increases, the resolution decreases. The set value %tON must be 65535 in
order to get 100% output even if the resolution decreases.
Note: In Speed PLC program, apart from hardware PWM, software PWM is
also available. Hardware PWM described in this section. For software PWM,
you can refer to the help pages of the Speed PLC program.
PTO Outputs
: PTO (pulse train output); It is a function that outputs a certain
number of square waves. After the set number of square wave outputs is operated,
output logic will be 0. The process frequency is found by multiplying the value written to
the frequency variable of the square wave by 10. In the first cycle of the process
frequency, output is logic 1 and in the other cycle output is logic 0. Thus, the PTO output
frequency is half of the process frequency.
When multiple PTO channels are used at a very high frequency at the same
time, the PLC may switch the PLC stop mode because the PLC cycle time will
increase. There is no such risk below 100 kHz.
Summary of Contents for HMI Basic
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