| Description: The mcu_flag attribute indicates whether the Mechanism Controller Unit (MCU) is powered. It is independent of the MCU motor power flag. |
| Namespace Id: dawn | Steward: ppi | Class Name: FC | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: SHORT_STRING |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | OFF | MCU is disabled, mechanisms cannot be moved. |
| | ON | MCU is enabled, mechanisms (filter wheel and front door) can be moved |