Yokogawa Button Operated DX2000 - Manual (Page 13)

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4. Simulation Function
4.1. Display Freeze Function
4.1.1. Specifications
A function used to stop the updating of the time, trend, digital values, and bar graph.
¾ The display freeze function is controlled through the event action function or
communication commands.
¾ Alarm summary, message summary, and various log displays are also not
updated if they are displayed.
While the display is frozen, display data is also not updated.
Key operation is possible while the display is frozen.
¾ Display operations such as switching the display group are possible.
When recovering from the display freeze condition to normal operation, the trend
display is resumed from where it left off.
¾ Screen image of the operation
“Close” to “Open”
The time display can be enabled or disabled in the basic setting mode.
¾ For details, see section 4.4, “Enabling/Disabling the Time Display.”
4.1.2. Event Action Function
You can freeze or activate the display using the event action function.
¾ The “Display Freeze/Activate” action can be specified only when the event is
set to “Remote.”
The “Display Freeze/Activate” action operates as a level action.
¾ The display freeze action is executed when an open-to-close event (rising
edge) is detected.
¾ The display activate action (normal operation) is executed when a
close-to-open event (falling edge) is detected.
close
open
Normal operation Display freeze Normal operation