15

CJ2M-CPU3

@/-CPU1@/-MD21@

Specifications of Pulse Input Functions

Interrupt Inputs

Quick-response inputs

High-speed Counter Inputs

Item

Direct Mode

Counter Mode

Number of interrupt inputs

Max. 8 inputs

Allocated bit

CIO 2960 and CIO 2962, bits 00 to 03

Interrupt detection method

ON-to-OFF or OFF-to-ON transitions

Interrupt task numbers

140 to 147 (fixed)

Counting method

---

Incrimenting or decrementing

(Set with the MSKS(690) instruction.)

Counting range

---

0001 to FFFF hex (16 bits)

(Set in A532 to A535 and A544 to A547.)

Response frequency

---

Single-phase: 3 kHz x 8 inputs

Storage locations for PVs for interrupt inputs

in Counter Mode

---

A536 to A539 and A548 to A551

Item

Specifications

Number of Quick-response inputs

Max. 8 inputs

Quick-response inputs

Signals that are shorter than the cycle time are latched for one PLC cycle, so they can be detected in the PLC program.

Minimum detectable pulse width is 30

μs.

Item

Description

Number of High-speed Counter Inputs

Max. 4 inputs

Pulse input method (counting mode)

Incremental pulse inputs

Differential phase input (4

×) Up/down inputs

Pulse + direction inputs

Input signals

Increment pulse

Phase A

Up pulse

Pulse

---

Phase B

Down pulse

Direction

---

Phase Z

Reset

Reset

Frequency and number of high-speed

counters

100 kHz, 2 inputs

× 2 I/O

Modules

50 kHz, 2 inputs

× 2 I/O

Modules

100 kHz, 2 inputs

× 2 I/O Modules

100 kHz, 2 inputs

× 2 I/O Modules

Counting mode

Linear mode or ring mode

Count value

Linear mode:

8000 0000 to 7FFF FFFF hex

0000 0000 to FFFF FFFF hex (for increment pulse)

Ring mode:

0000 0000 to Max. ring value

High-speed counter PV storage locations

High-speed counter 0: A271 (upper 4 digits) and A270 (lower 4 digits)

High-speed counter 1: A273 (upper 4 digits) and A272 (lower 4 digits)

High-speed counter 2: A317 (upper 4 digits) and A316 (lower 4 digits)

High-speed counter 3: A319 (upper 4 digits) and A318 (lower 4 digits)

Refreshed during overseeing processing. Use PRV(881) to read the most recent PVs.

Data format: 8 digit hexadecimal

• Linear mode:

8000 0000 to 7FFF FFFF hex

0000 0000 to FFFF FFFF hex (for increment pulse)

• Ring mode:

0000 0000 to Max. ring value

Control method

Target value comparison

Up to 48 target values and corresponding interrupt task numbers can be registered.

Range Comparison

Up to 8 or up to 32 ranges can be registered, with a separate upper limit, lower limit, and interrupt task number for each

range.

Counter reset method

• Phase-Z + Software reset

The counter is reset when the phase-Z input goes ON while the Reset Bit (A531.00 to A531.03) is ON.

• Software reset

The counter is reset when the Reset Bit (A531.00 to A531.03) is turned ON.

Operation can be set to stop or continue the comparison operation when the high-speed counter is reset.