This is historical information of device classes implemented in AttributeMonitor device server.

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Development status: New development
Information status: Updated

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Class Description


This class monitors a Tango device attribute. A formula is applied on two consecutive attribute readings. If this formula is true, a voice alarm message is sent to the Control Room. The attribute to be monitored, the voice alarm message and the formula are defined as properties. <p> The device attribute <b>IsAlarm</b> has to be polled to force the attribute reading. The polling period is the delta time between the two consecutive attribute readings. In the formula, <b>previous_attr_value</b> has to be used to reference the previous attribute reading while <b>attr_value</b> has to be used to reference the last attribute reading

Families: SoftwareSystem

Key words:

Platform: All Platforms

Language: Python

License: GPL

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Hardware


Manufacturer: none

Bus: Not Applicable

Class interface


Attributes:

Name Description
IsAlarmScalar: DevBoolean This read-only attribute is set to true when the alarm condition evaluated from the alarm formula is met.
AlarmTriggerScalar: DevString This read-only attribute is set to the present "AlarmTrigger" property value which is the alarm formula
AlarmMessageScalar: DevString The message sent to the text talker device in case of alarm
MonitoredAttributeScalar: DevString The full monitored attribute name (device name/att name)
EnabledScalar: DevBoolean This read-write attribute enables, when set to "true", the emission of a vocal message alarm

Commands:

Name Description
StateInput: DevVoid
Output: State
Device state
This command gets the device state (stored in its device_state data member) and returns it to the caller.
StatusInput: DevVoid
Output: ConstDevString
Device status
This command gets the device status (stored in its device_status data member) and returns it to the caller.

Pipes:

Properties:

Name Description
VoiceDeviceNameDevString Device name for the text talker device
DeviceNameDevString Device name for which one of the attribute has to be monitored
AttributeNameDevString Name of the attribute to be monitored
AlarmTriggerDevString Formula to be applied with the two attribute consecutive readings (previous_attr_value and attr_value)
AlarmMessageDevString Voice message sent to the talker message in case the alarm formula evaluates to true

6 May 2017, Piotr Goryl
Updated:
The device class has been updated.
You are looking at this version now.



23 Feb 2017, Piotr Goryl
Updated:
The device class has been updated.
You can see previous version here .



19 Jan 2017, Piotr Goryl
Updated:
The device server has been updated.
You can see previous version here .



3 Jan 2017, Piotr Goryl
Created:
The device server has been added to catalogue.
Added by:pgoryl2 on:6 May 2017, 3:04 a.m.