118
Pulse I/O Board
Section 2-2
PC Setup Settings
Before outputting variable duty factor pulses from port 1 or 2, switch the PC to
PROGRAM Mode and make the following settings in the PC Setup.
Operation Settings of Ports 1 and 2
Make the following settings to set port 1 (DM 6643) or port 2 (DM 6644) to
variable duty factor pulse output mode. Ports 1 and 2 can be set separately.
Note
1.
When a port is set to variable duty factor pulse output, it cannot output fixed
duty factor pulses.
2.
When using variable duty factor pulse output, all instructions can be used,
regardless of the Port Mode.
Variable duty factor pulse output
Variable Duty Factor
Pulse Outputs
Duty factor: Ratio of
ON time to pulse cycle.
MODE CONTROL
Each cycle
Each execution
Pulse output status
Port 1: AR 05
Port 2: AR 06
HIGH-SPEED
COUNTER PV
READ
Pulse I/O Board
Port 1 pulse
output (CN1)
Port 2 pulse
output (CN2)
PULSE WITH VARIABLE
DUTY FACTOR
Target: 91.6 Hz, 1.5 kHz, or
5.9 kHz
Duty factor: 1 to 99 (see note)
Pulse output start
Pulse output stop
Pulse output
status read
Variable Duty Factor Pulse Outputs
PC Setup
Bits 12 to 15 of
DM 6643/DM 6644 set to 1.
Ladder Program
15
0
DM 6643
1
Bit
15
0
DM 6644
1
Bit
Port 1 Pulse Type
0: Fixed duty factor pulse output
1: Variable duty factor pulse output
Default:
0
(Fixed duty factor pulse output )
Port 2 Pulse Type
0: Fixed duty factor pulse output
1: Variable duty factor pulse output
Default:
0
(Fixed duty factor pulse output )
Instruction
PWM(––)
INI(61)
PRV(62)
Function
Frequency setting
Duty factor setting
Pulse output start
Pulse output stop
Pulse output status
read
High-speed
Counter Mode
Enabled
Simple Positioning
Mode
Enabled
