User`s manual

16
CHAPTER 1 OVERVIEW
The QD65PD2 is a multi function counter/timer module whose maximum counting speed of input pulse is 8Mpps (with
differential input and 4 multiples of 2 phases).
The QD65PD2 has two channels and functions including the preset/replace function by external input or input from a
CPU module, the latch counter function, counter function selection, external coincidence output by coincidence
detection, and general-purpose input/output.
The illustration below shows the QD65PD2 operation overview.
CH2
CH1
QD65PD2
CPU module
Encoder
1)
Pulse
Controller
2)
3) 7)
3)
7)
External
control signal
General-purpose
input
(0 to 6 points)
shared with CH2.
General-purpose
output
(0 to 8 points)
shared with CH2.
Coincidence
output
(0 to 8 points)
shared with CH2.
General-purpose
output
(0 to 8 points)
shared with CH1.
Coincidence
output
(0 to 8 points)
shared with CH1.
General-purpose
input
(0 to 6 points)
shared with CH1.
1) Pulses input to the QD65PD2 are counted.
2) The preset function can be performed, counting can be paused, and a counter value can be latched
with external control signal.
3) ON/OFF signals can be input from general-purpose input 1 to 6 terminals (IN1 to IN6).
4) Status of the I/O signals and buffer memory of the QD65PD2 can be checked with the sequence program.
Also, counting can be started/stopped; and the preset function and the coincidence output function
can be performed.
5) When the counter value matches with the set value or when a counted difference value is stored,
an interrupt request can be issued to the CPU module.
6) The coincidence output signal can be output by the coincidence output function.
7) ON/OFF signals can be output from general-purpose output 1 to 8 terminals (OUT1 to OUT8).
5)
6)
Encoder
1)
Pulse
Controller
2)
External
control signal
5)
6)
Preset (phase Z)
function latch
Preset (phase Z)
function latch
4) Reading/writing
I/O signals and
buffer memory
Interrupt request