Emerson Rosemount 702 Quick Start Manual page 31

April 2018
Short events (less than latch hold time) of the measured value will be latched
to the reported value for the duration of latch hold time.
Figure 5-14:
A. Measured
B. Reported
The start of the ltach hold timer begins when the measured signal first
transitions to active state.
Figure 5-15:
A
B
A. Measured
B. Reported
The latch only applies to transitions into the active state. As soon as the
reported value is no longer latched,the devices is armed for the next event.
Figure 5-16:
A
B
A. Measured
B. Reported
If the measured value goes inactive and active again before the initial latch
hold timer experies, the latch hold timer will restart from the beginning of
the most recent event.
Quick Start Guide
Latch Time Short Events
A
B
Latch Hold Time Start
Latch Applies to Transitions to Active State
Quick Start Guide
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