165
Built-in Outputs
Section 6-2
Procedure
Restrictions on the PWM(891) Outputs
• Pulse outputs 0 and 1 cannot be used for PWM(891) outputs 0 and 1 if
the origin search function is enabled for the pulse output.
Specifications
Note
The frequency can be set up to 6553.5 Hz in the PWM(891) instruction, but
the duty ratio accuracy declines significantly at frequencies over 1 kHz
because of limitations in the output circuit at high frequencies.
•
PWM output 0 uses OUT4 (CIO 296104)
PWM output 1 uses OUT5 (CIO 296105)
•
Connect to OUT4 or OUT5.
•
Disable the origin search function for pulse
output 0 or 1 by setting the Origin Search
Function Enable/Disable setting to 0.
The Origin Search Function Enable/Disable
setting for pulse outputs 0 and 1 is in the
rightmost digit (bits 00 to 03) of Programming
Console addresses 256 and 274, respectively.
Note:
Disable the origin search function because the PWM output
shares the output with the origin search function's Error
Counter Reset Output and both cannot be used
simultaneously.
Execute PWM(891).
Note:
PMW output 1 is supported by the
CJ1M-CPU22/CPU23 only.
Determine the pulse output port.
Wire the outputs.
PLC Setup settings
Ladder program
Item
Specifications
Duty ratio
CJ1M Pre-Ver. 2.0 CPU Units: 0% to 100% in 1%
increments
CJ1M CPU Units Ver. 2.0: 0.0% to 100.0% in 0.1%
increments
(Duty ratio accuracy is ±5% at 1 kHz.)
Frequency
0.1 Hz to 6,553.5 Hz
Set in 0.1 Hz units. (See note.)
Output mode
Continuous mode
Instruction
PWM(891)
Содержание CJ1M-CPU21
Страница 1: ...Cat No W395 E1 03 CJ series Built in I O CJ1M CPU21 22 23 CJ1M CPU Units...
Страница 2: ...CJ series Built in I O CJ1M CPU21 22 23 CPU Units Operation Manual Revised August 2004...
Страница 3: ...iv...
Страница 19: ...xx...
Страница 79: ...50 Wiring Examples Section 3 3...
Страница 217: ...188 Origin Search and Origin Return Functions Section 6 3...
Страница 220: ...191 Built in Outputs Section 7 1...
Страница 247: ...218 Built in Outputs Section 7 1...
Страница 251: ...222 Combinations of Pulse Control Instructions Appendix A...
Страница 255: ...226 Using Pulse Instructions in other CPU Units Appendix B...
Страница 263: ...234 Index...
Страница 265: ...236 Revision History...