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Pulse I/O Board Section 2-2
Operation will be as illustrated below when the program is executed.
2-2 Pulse I/O Board
2-2-1 Model
2-2-2 Function
The Pulse I/O Board is an Inner Board that supports two pulse inputs and two
pulse outputs.
Pulse Inputs 1 and 2 Pulse inputs 1 and 2 can be used as high-speed counters to count pulses
input at either 50 kHz (signal phase) or 25 kHz (differential phase). Interrupt
processing can be performed based on the present values (PV) of the
counters.
Input Mode
The following three Input Modes are available:
• Differential Phase Mode (4x)
• Pulse/Direction Mode
• Up/Down Mode
Interrupts
The Board can be set to execute an interrupt subroutine when the value of the
high-speed counter matches a specified target value, or an interrupt subrou-
tine when the PV falls within a specified comparison range.
Pulse Outputs 1 and 2 Two 10 Hz to 50 kHz pulses can be output from port 1 and port 2. Both fixed
and variable duty factors can be used.
• The fixed duty factor can raise or lower the frequency of the output from
10 Hz to 50 kHz smoothly.
• The variable duty factor enables pulse output to be performed using a
duty factor ranging from 1% to 99%.
Note While pulse inputs and pulse outputs can be performed simultaneously, it is
not possible to use all high-speed counter and pulse output functionality at the
same time. The Port Mode Setting (High-speed Counter Mode/Simple Posi-
tioning Mode) in the PC Setup (DM 6611) will determines which has full func-
tionality enabled.
Time
Pulse frequency (Hz)
Name Model Specifications
Pulse I/O Board CQM1H-PLB21 Two pulse input points and two pulse
output points
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