7-23
7 High-speed Counters
CJ2M CPU Unit Pulse I/O Module User’s Manual
7-3 High-speed Counter Interrupts
7
7-3-1 Overview
z High-speed Counter Interrupts Settings
Click the I/O Module Tab and then click the Set Button in the High-speed Counter Settings Area. In the
High-speed Counter Detailed Settings Dialog Box, select the input pulse frequency for the Counter set-
ting parameter and set the counting mode, ring counter maximum value, reset method, pulse input
method, and other parameters.
Refer to 7-1-2 Application Procedure for details.
Application Procedure
1
• Set the operation of the high-speed counters.
• Select the required input pulse frequency from
the High-speed Counter Detailed Settings Dialog
Box that is accessed from the I/O Module Tab
Page of the PLC Setup using the CX-Program-
mer. Set the counting mode, reset method, pulse
input mode, and other parameters.
• Input terminals IN02, IN03, IN06 to IN09, IN12,
IN13, and IN16 to IN19 can be used for high-
speed counters. These correspond to high-speed
counters 0 to 3.
2
• Write a program for interrupt tasks 0 to 255.
• Set the comparison values for the high-speed
counter and the interrupt tasks (0 to 255) to be
started using the CTBL(882) instruction.
• Start the comparison using the INI(880) instruc-
tion. The comparison can be started simulta-
neously when registering the comparison values
using the CTBL(882) instruction.
Pulse I/O
Module No.
I/O Module Tab Page in PLC
Setup
Instruc-
tion
CTBL port
specifier (P)
Interrupt task
number
0 (on the right) High-speed counter 0 Select Use
Check Box.
CTBL(8
82)
#0000 0 to 255 (Speci-
fied by user.)
High-speed counter 1 #0001
1 (on the left) High-speed counter 2 #0002
High-speed counter 3 #0003
PLC Setup
PLC Setup
Create
ladder
program.
Interrupt task
Execution of CTBL and
INI Instructions for
Cyclic Task
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