Concept
Value Editing
The value of inputs, outputs and values, such as non-calculated setpoints, control mode selectors, and digital override switches can be edited in Operator Display.
Many inputs, outputs and values receive their value from the system. For example, from a program sequence or a time schedule in the device or server application, or from a connected field device, such as a sensor.
When you edit the value it returns to the value received from the system. For example, if you edit the value of a calculated setpoint it will return back to the calculated setpoint value.
Forced Values
When you force a value you override the value that is received from the system. The forced value is then used to control the system equipment. When you release a forced value, the value returns to the value received from the system again.
You normally do not have to force values. The system is configured so that values intended to be edited, such as non-calculated setpoints, control mode selectors, and digital override switches, are editable without having to be forced.
Warning
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Unintended equipment operation Do not force values without knowing the effect. Failure to follow these instructions can result in death, serious injury, or equipment damage. |
BACnet Command Priorites for Forced Values
When you force a value in Operator Display, the BACnet command priority is by default set to priority level 8. This is the suggested priority level for manual operations based on the BACnet Standard. For more information, see BACnet Command Priorities .
As an administrator, you can change the BACnet command priority level for forced values. Be careful when selecting the priority level. If higher priorities are used, it may interfere with higher-priority equipment, such as manual life safety, automatic life safety, or critical equipment control.
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Warning
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Unintended equipment operation Do not configure the BACnet command priority level for forced values without knowing how the priority level may interfere with higher-priority equipment. Failure to follow these instructions can result in death, serious injury, or equipment damage. |
For more information, see Configuring the BACnet Command Priority Level for Forced Values .
Indications
On the inputs, output and value detail screens, a forced value is indicated by the Force toggle being dark gray
Operator Display Overview
BACnet Command Priorities
Configuring the BACnet Command Priority Level for Forced Values
Editing an Analog Input, Output, or Value
Editing a Binary Input, Output, or Value
Editing a Multi-State Input, Output, or Value