OMRON Pulse I/O Board CQM1H-PLB21
Product name:Pulse I/O Board.
Model:CQM1H-PLB21.
Applicable CPU Units:CQM1H-CPU51/61.
Mounting locations/No. of Boards:One in Inner Board slot 2 (right slot).
Pulse inputs:4 inputs.
Pulse outputs:2 outputs.
Dimensions:25 × 110 × 107 mm (W × H × D).
Weight:90 g max.

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The Pulse I/O Board is an Inner Board that supports two pulse inputs and two pulse outputs.

Pulse Inputs
• The two pulse inputs to high-speed counters count pulses at up to 50 kHz (signal phase) or 25 kHz (differential phase). Interrupt can be created based on the counter present values (PV).

Interrupts

The Board can execute an interrupt subroutine when the counter PVmatches a specified target value (target value comparison) or falls withina specified comparison range (range comparison.)Pulse Outputs 1 and 2
Two 10 Hz to 50 kHz pulses can be output. Both fixed and variable duty
factors can be used.

• The fixed duty factor can be used to change the output frequen-cy (accelerate or decelerate) from 10 Hz to 50 kHz smoothly.

• The variable duty factor performs using a duty factor ranging from 1% to 99%. Variable duty factor pulses can be used for ap-plications such as time-proportional control.

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