203
Pulse I/O Board Section 8-2
• 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 determine which has full func-
tionality enabled.
Pulse Outputs 1 and 2 Two pulse inputs (high-speed counter) and two pulse outputs can be used
simultaneously via ports 1 and 2. To determine which has functional priority,
the appropriate Port Mode setting must be entered in the PC Setup
(DM 6611).
Note 1. Mode 0: Acceleration + Independent Mode; Mode 1: Acceleration + Con-
tinuous Mode; Mode 2: Deceleration + Independent Mode; Mode 3: Decel-
eration + Continuous Mode.
2. The port modes for both ports 1 and 2 is always set to the same mode, i.e.,
either High-speed Counter Mode and Simple Positioning Mode. The mode
cannot be set separately for each port.
Mode Content High-speed counter
functions
Pulse output functions DM 6611
setting
Reading
PV with
PRV(62)
High-
speed
counter
interrupts
with
CTBL(63)
No
trapezoidal
acceleration/
deceleration
(SPED(64))
Identical
acceleration/
deceleration
rates
(PLS2(––))
Separate
acceleration/
deceleration
rates
(ACC(––))
High-
speed
Counter
Mode
High-speed counter given
priority.
All high-speed counter
functions are enabled.
Trapezoidal acceleration/
deceleration for pulse
outputs is limited.
Yes Yes Yes Mode 0 dis-
abled (Modes
1 to 3
enabled) See
note 1.
0000 Hex
Simple
Position-
ing Mode
Pulse output given
priority.
All pulse output functions
are enabled.
Interrupts for the
high-speed counter are
disabled.
Yes No Yes Yes Yes 0001 Hex
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