ICPDAS
I-8092F Software User Manual
90
A.2.2 Fixed Pulse Driving
When host CPU writes a pulse numbers into I-8092F for fixed pulse driving, and configures the
performance such as acceleration / deceleration and speed. I-8092F will generate the pulses and
output them automatically. When output pulse numbers are equal to the command pulse
numbers, I-8092F stops the output. The profile is showing in Fig. A-7. Concerning the execution
of fixed pulse driving in acceleration / deceleration, it is necessary to set the following
parameters:
Range: R
Initial Speed: SV (PPS)
Driving Speed: V (PPS)
Acceleration: A (PPS/Sec)
Deceleration: D (PPS/Sec)
Output Pulse Numbers: P
A.2.3 Changing Output Pulse Numbers in Driving
The output pulse numbers can be changed in the fixed pulse driving. If the command is for
increasing the output pulse, the pulse output profile is shown as Fig. A-8 or A-9.
If the command is for decreasing the output pulses, the output pulse will be stopped immediately
as shown in Fig. A-10. Furthermore, when in the S-curve acceleration /deceleration driving mode,
the output pulse number change will occur to an incomplete deceleration S-curve.
A.2.4 Offset Setting for Acceleration/Deceleration Driving
The offset function can be used for compensating the pulses when the decelerating speed
doesn’t’ reach the setting initial speed during the S-curve fixed pulse driving. It will calculate the
acceleration / deceleration point automatically, and will arrange the pulse numbers in
acceleration equal to that in deceleration. The method is calculating the output acceleration
pulses and comparing them with the remaining pulses. When the remaining pulses are equal to
or less the pulses in acceleration, it starts the deceleration. When setting the offset for
deceleration, it will start deceleration early for the offset. The remaining pulses of offset will be
driving output at the initial speed (see Fig. A-11). The default value for offset is 8 when motion
card power-on reset. It is not necessary to change the shift pulse value in the case of
acceleration/deceleration fixed pulse driving.
