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5.4 Fixed Pulse Mode PWM Output
To configure high speed output in fixed pulse mode (Trapezoidal / soft start) follow the steps below:
1) Create a new application
2) Add expansion FPED-HS-0808N in slot1
3) Set 'PWM configuration resister' on screen
4) Put value as 9 in 'PWM configuration resister'
5) Set 'Minimum frequency setting resister' on screen and put its value as '4'
6) Set 'Maximum frequency setting resister' on screen and put its value as '100'
7) Set 'Acceleration time register' and set it value as 32000
8) Set 'Deceleration time register' and set it value as 32000
9) Set 'Total pulse count' register and set value as 5000
10) Set elapsed time on screen
11) Download application
This will RUN the operation in fixed pulse mode (trapezoidal / soft start).
Note:
Minimum frequency should be maximum 10,000.
In this mode, fixed number of pulses can be output on the Y2 of expansion of transistor outputs of the unit
according to the specified parameter.
The function selection is done using Configuration register MW0124 (for Slot 1).
When the corresponding control flag is off and the execution condition (trigger) is in the on state, a pulse is
output from the specified output (Y2).
The control code, minimum frequency, maximum frequency, acceleration time, deceleration time and total
number of pulses are specified by a user program as shown in the following table.
The frequency is switched by the acceleration/deceleration time specified for changing from the initial speed
to the maximum speed. The acceleration and deceleration is normally done in 30 steps.
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