Datasheet

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.