User`s manual

17
CHAPTER 1 OVERVIEW
1
1.1 Features
1.1 Features
(1) Multiple functions
The QD65PD2 has the following functions.
• Counter function
• Frequency measurement function
• Rotation speed measurement function
• Pulse measurement function
• PWM output function
• Cam switch function
• General-purpose input/output
Use of the functions above reduces application creation work by the user.
(2) Count in the maximum counting speed of 8Mpps (with differential input and 4
multiples of 2 phases)
The QD65PD2 can be used with high resolution encoders (such as linear scale). Therefore, the position
detection performance of equipment and the work transition speed can be improved.
(3) Count in a wide range from -2147483648 to 2147483647
Count values are stored in 32-bit signed binary.
(4) Pulse input selection
The pulse input mode can be selected from 1-phase multiple of 1, 1-phase multiple of 2, 2-phase multiple of 1, 2-
phase multiple of 2, 2-phase multiple of 4, and CW/CCW.
(5) Two counter formats
The following counter formats are available.
(a) Linear counter format
Pulses are counted from -2147483648 to 2147483647, and an overflow or an underflow is detected when the
count range is exceeded.
(b) Ring counter format
Pulses are repeatedly counted within the range between the upper limit value and the lower limit value of the
ring counter.