|
System Variable Name
|
Description
|
Data Type
|
Read Only?
|
|
_HMI_Brightness
|
The current backlight brightness. This is a control variable, so setting it to a valid value will cause the current backlight brightness to be changed.
|
Integer
|
Read-Write
|
|
_HMI_IsScreenSaverActive
|
Whether the screen saver is active. The ActivateScreenSaver action has to be used to make the screen saver active.
|
Boolean
|
Read-Write
|
|
_HMI_DateTime
|
The current local time, read from the internal clock. The SetDateTime action has to be used to adjust the time.
|
Date
|
Read-Only
|
|
_HMI_CanEjectSDCard
|
Whether the power for SD memory card is currently supplied. To remove the SD memory card, the EjectSDMemory action has to be used.
|
Boolean
|
Read-Only
|
|
_HMI_RunSignal
|
Whether HMI is operating normally. The value of this variable should be toggled periodically while HMI is normal. Even when displaying any menu or a message box, this variable should be toggled.
|
Boolean
|
Read-Only
|
|
_HMI_IsPageSwitching
|
Whether the page is being switched. When switching a page, this variable should be turned ‘ON’. After the operation is complete, this variable should be turned ‘OFF’.
|
Boolean
|
Read-Only
|
|
_HMI_IsDataInput
|
Whether any data input object on page is being used to enter data. When any data input object on page has a focus for data input, this variable should be turned ‘ON’, otherwise it should be turned ‘OFF’.
|
Boolean
|
Read-Only
|
|
_HMI_IsBatteryLow
|
The HMI internal battery voltage state. When the voltage level is below the warning threshold, this variable should be turned ‘ON’, otherwise it should be turned ‘OFF’.
|
Boolean
|
Read-Only
|
|
_HMI_CurrentPage
|
The name of the currently displayed page.
This is a control variable – setting it to a valid page will cause the displayed page to be changed. Invalid page names will be ignored.
|
String
|
Read-Write
|
|
_HMI_Millisecond
|
Milliseconds, based on the system clock value.
|
Integer
|
Read-Only
|
|
_HMI_Second
|
Seconds, based on the system clock value.
|
Integer
|
Read-Only
|
|
_HMI_Minute
|
Minutes, based on the system clock value.
|
Integer
|
Read-Only
|
|
_HMI_Hour
|
Hours, based on the system clock value.
|
Integer
|
Read-Only
|
|
_HMI_RAMTotal
|
The amount of RAM in the NA
|
Integer
|
Read-Only
|
|
_HMI_RAMInUse
|
The amount of RAM currently in use in the NA
|
Integer
|
Read-Only
|
|
_HMI_ManagedRAMInUse
|
The amount of Managed RAM in use the NA
|
Integer
|
Read-Only
|