This document describes the core concept of Tango Controls which is Device.
A Device is an object within the Tango Controls System. The Device SHALL be accessible locally and remotely through its interface.
Before accessign the Device it SHALL be created by/within a Device Server…
The Device has device_name. device_name is a character string which SHALL uniquely identify the device within the system Tango Controls System.
Extend the above (device cration, life, deletion), formal specification of device name as domain/subdomain/device, …
Device SHALL provide way to read its:
Device SHALL implement an interface to interact with its:
- Attributes as device_attributes_interface
- Pipes as device_pipes_interface
- Commands as device_commands_interface
- Properties as device_properties_interface
- Polling system as device_polling_interface
- Events system as device_events_interface
; device object description device = device_name [device_description] device_class device_state device_status admin_device device_ping_interface device_blackbox_interface device_info_interface device_attributes_interface device_commands_interface device_pipes_interface device_properties_interface device_polling_interface device_events_interface
device_attributes_interface SHALL allow for the following operations:
query_device_attributes_list = C:get_device_attributes_list (S:device_attributes_list | S: tango_exception)
An attribute is a concept related to process variables. It provides real-time data value of specified datatype
attribute = attribute_config attribute_value attribute_dim