Rockwell Automation Allen-Bradley ArmorBlock 1732E-IB8M8SOER User Manual page 76

Chapter 10 Use the Sequence of Events Input and Scheduled Output Modules
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Each Time Slot stores the information described in
Table 9 - Time Slot Information
Topic
Latch Event Mask
Unlatch Event Mask
Interval
Pulse Off Mask
Output On Mask
Output Off Mask
Figure 21 is a simplified overview of how Time Slot data is utilized.
Figure 21 - Overview of How Time Slot Data Utilization
Interval
Output On Mask
Time slots are also used to process overlapping cam elements. A semaphore is
maintained to indicate the currently active state of each output bit. In
addition, if a programmed cam element Latch and Unlatch event occurs in the
same time slot, they cancel each other out.
Rockwell Automation Publication 1732E-UM003D-EN-E - November 2021
Description
When a latch event is detected, the time slot in which it belongs is calculated
and the bit in the Latch Event Mask corresponding to the output bit of the latch
is set.
When an unlatch event is detected, the time slot in which it belongs is
calculated and the bit in the Unlatch Event Mask corresponding to the output
bit of the unlatch is set.
The time in micro-seconds from the start of the coarse update in which the
Latch or Unlatch event occurs.
For pulsed outputs, the time slot in which a pulse off event is calculated and
the bit in the Pulse Off Mask corresponding to the output bit of the pulse event
is set.
For normal outputs, the bit corresponding to the output bit of the Latch or
Pulse On event is set indicating that the output is to be turned on for these
events.
For inverted outputs, the bit corresponding to the output bit of the Unlatch or
Pulse Off event is set indicating that the output is to be turned on for these
events.
For normal outputs, the bit corresponding to the output bit of the Unlatch or
Pulse Off event is set indicating that the output is to be turned off for these
events.
For inverted outputs, the bit corresponding to the output bit of the Latch or
Pulse On event is set indicating that the output is to be turned off for these
events.
Latch/unlatch detection
Latch Event Mask Unlatch Event Mask
Pulsed Output Processing
Normal/Inverted Output Processing
Output Off Mask
Write Outputs
Table 9.