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MELSEC-Q
3 SPECIFICATIONS
3.2 Function List
The QD62(E/D) functions are listed below.
Name Function
Reference
section
Linear counter function
Values from –2147483648 to 2147483647 can be counted. If the count
exceeds the range, this function detects an overflow.
Section 5.2.1
Ring counter function
Repeatedly executes counting between the ring counter maximum and
minimum values.
Section 5.2.2
Coincidence output function
Compares the coincidence output point of any preset channel with the
present counter value, and outputs the ON/OFF signal.
Coincidence detection
interrupt function
Generates an interrupt signal to the programmable controller CPU
when coincidence is detected, and starts the interrupt program.
Section 5.3
Preset function
Rewrites the present counter value to any numeric value.
Performs preset using the sequence program or external preset input.
Section 5.4
Disable count
function
Stops the pulse count while the count enable command is being
executed.
Section 6.2
Latch counter
function
Stores the present counter value at the time the counter function
selection start command signal is input in the buffer memory.
Section 6.3
Sampling counter
function
Counts the pulses that are input during the preset sampling time
period from the time the counter function selection start command is
input, and stores the count in the buffer memory.
Section 6.4
Counter
function
selection
Periodic pulse
counter function
While the counter function selection start command signal is being
input, stores the present value in the buffer memory at preset interval.
Section 6.5
The functions can be used in combination. However, only either one of the linear counter function or ring
counter function can be used, and only one of the four counter functions can be selected.
Содержание QD62
Страница 1: ......
Страница 2: ......
Страница 13: ...A 11 A 11 MEMO ...
Страница 55: ...4 18 4 18 MELSEC Q 4 SETUP AND PROCEDURE BEFORE STARTING THE OPERATION MEMO ...
Страница 91: ...7 17 7 17 MELSEC Q 7 UTILITY PACKAGE GX Configurator CT Counter selection 1 Coincidence output Ring counter ...
Страница 97: ...8 5 8 5 MELSEC Q 8 PROGRAMMING 3 Program example a Set only when the linear counter is used ...
Страница 100: ...8 8 8 8 MELSEC Q 8 PROGRAMMING 2 Program example a Set only when the ring counter is used ...
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