The table below lists the commands supported by the Multistate Output Object.
|
Command Name |
Parameters |
Description |
|---|---|---|
|
Disable Alarms |
None |
Disables all types of alarming: alarm extensions, BACnet intrinsic alarming, and BACnet Event Enrollment objects. |
|
Enable Alarms |
None |
Enables all types of alarming: alarm extensions, BACnet intrinsic alarming, and BACnet Event Enrollment objects. |
|
In Service |
None |
Cancels the effect of an Out of Service command and returns the Out of Service attribute to False. The Present Value and Reliability will revert back to the values obtained from the physical hardware output. Note: For BACnet objects, support of this command
is dependent on the ability to write the Out Of
Service attribute.
|
|
Operator Override |
The value to be written to the Present Value attribute. |
Updates the Present Value at Command Priority Operator Override (8). The Operator Override command sends the specified command to the internal NxE object, which is then only sent to the field device when one of the following conditions is met: a) NOT Local Control and NOT Out Of Service, or b) NOT Local Control and after issuing the In Service command. |
|
Out of Service |
None |
Overrides the object's hardware output. The Out of Service command changes the Out of Service attribute to True. The Present Value and Reliability no longer track the physical output. No commands are sent to the actual hardware. When the Out of Service attribute is set to False, the current Present Value is sent to the actual hardware. When an Out Of Service command is issued, the NxE does not communicate subsequent changes (operator or system) to the field device. For BACnet objects, support of this command depends on the ability to write the Out Of Service attribute. |
|
Release Operator Override |
None |
Releases Command Priority Operator Override (8) from Present Value. |
|
Release |
|
Releases the identified command priority from the specified, writable attribute, and allows it to be controlled by the next highest priority. |
|
Release All |
Attribute name |
Releases Command Priorities 3 through 16 (Default) from the specified, writable attribute. Command Priorities 1 and 2 remain. Important: The Release
All command may not cause an immediate
return to automatic operation. The
Release All command clears
all command priorities, including those that come
from applications and features. When this release
happens, the output point goes to its Relinquish
Default condition. In some cases, the application
or feature may have sent a command that does not
match Relinquish Default. In this instance, the
output point does not end in the state that the
applications or features intended. This situation
can cause unexpected operation to occur; for
example, a space might overcool or overheat, a fan
might run longer than expected, and so on. If an
operator has overridden an input, use the Release
Operator Override command.
|
|
State0 … StateN |
None |
Releases Command Priorities 9 through 15 (Scheduling) and then writes to the Present Value at the Default (16) command priority. If this is the highest priority, it is sent to the controller. Both the state command names and the number of commands are dependent on the States Text and Number of States attributes. Important: Be aware that an operator
state command releases the actions of any
processes running to the object in the NxE or FEC
controllers that use Priorities 9 through 16.
Consider this behavior when creating control
strategies.
If Local Control is True, this command is rejected. |
|
Temporary Override |
The value to be written to the Present Value attribute, in addition to the duration of the override in hours and minutes. |
Overrides a point temporarily for a specified period of time. After the specified time period passes, the Override is automatically released. |