Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules - Manual (Page 105)

Rockwell Automation Publication 1756-UM058G-EN-P - November 2012 105
Fast Module Features Chapter 5
5. To copy the current configuration to one or more of the remaining output
points, so that multiple outputs share the same PWM behavior, do the
following:
a. Click Copy PWM Configuration.
b. On the Copy PWM Configuration dialog box, check the points to
which to apply the current configuration and click OK.
By default, all points are checked.
6. On the PWM Configuration tab, click OK to save the configuration for
each output point you specified.
Enable Cycle Limit Check the checkbox to allow only a fixed number of pulse cycles to occur.
See
Figure 15 on page 99 .
By default, the Enable Cycle Limit checkbox is cleared, and pulse cycles continue
to occur until the output turns Off.
C:Pt[x].PWMCycleLimitEnable C:PWM.CycleLimitEnable
Cycle Limit Enter the maximum number of pulse cycles you want to occur on each output
logic transition when Enable Cycle Limit is checked:
• If you check the Execute All Cycles checkbox below, the specified number of
cycles will occur even if the Data output tag turns Off before the completion
of the specified number of cycles.
• If you clear the Execute All Cycles checkbox below, the specified number of
cycles will occur only if the Data output tag remains On for a sufficient
amount of time for the specified number of cycles. For example, if you specify
a cycle limit of 4, and the output turns Off after 3 cycles, the 4th cycle will
not occur.
This field is only available when the Enable Cycle Limit checkbox is checked.
By default, the cycle limit is 10. Valid values are 1…27.
C:Pt[x].PWMCycleLimit C:PWM.CycleLimit
Execute All Cycles Check the checkbox to always execute the number of cycles specified in the Cycle
Limit field even if the Data output tag turns Off. For example, if you specify a
cycle limit of 2, and the output turns Off after 1 cycle, the second cycle will still
occur despite the output turning Off. See
Figure 16 on page 100 .
If the output logic transitions multiple times before the cycle limit is reached, all
subsequent transitions will be ignored until the cycle limit is reached. Once the
cycle limit is reached, a new cycle sequence will begin.
This field is only available when the Enable Cycle Limit checkbox is checked. By
default, the Execute All Cycles checkbox is cleared.
C:Pt[x].PWMExecuteAllCycles C:PWM.ExecuteAllCycles
Field Description 1756-OB16IEF Tag Name 1756-OB16IEFS Tag Name