Device variables
Bind a property of a graphic object to a predefined Device variable to display the memory and storage usage on the HMI device. For example, bind to the Free memory variable to display the amount of RAM available on the HMI device. To bind to a variable, see Create dynamic links.
The Device category in the Dynamic Link browser displays the variables related to the HMI device.
| Variable | Type | Definition | Read or Write | Reboot Required |
|---|---|---|---|---|
| Catalog number | String | Catalog number read from the controller | Read-only | Reboot not required |
| CPU frequency | UInt32 | Frequency at which the CPU is running in megahertz | Read-only | Reboot not required |
| CPU temperature | UInt32 | Temperature of CPU in Celsius | Read-only | Reboot not required |
| CPU utilization | UInt32 | Percentage of CPU processing power used in the last two seconds | Read-only | Reboot not required |
| Ethernet network count | UInt32 | Number of Ethernet networks supported by the device | Read-only | Reboot not required |
| Ethernet port count | UInt32 | Number of physical Ethernet ports supported by the device | Read-only | Reboot not required |
| Firmware date | DateTime | Date of the device firmware | Read-only | Reboot not required |
| Firmware version | String | Version of the device firmware | Read-only | Reboot not required |
| Hardware product code | UInt32 | Hardware product code of the device | Read-only | Reboot not required |
| Hardware product type | UInt32 | Hardware product type of the device | Read-only | Reboot not required |
| Hardware version | String | Version of the device hardware | Read-only | Reboot not required |
| Hardware series | String | Series of the device hardware | Read-only | Reboot not required |
| Host name | String | Name of the device on the network | Read/Write | Reboot required |
| Last application update time | DateTime | Date and time at which the application was last deployed to the device | Read-only | Reboot not required |
| Last bootup time | DateTime | Date and time at which the device was last booted | Read-only | Reboot not required |
| OS version | String | Version of the device operating system | Read-only | Reboot not required |
| Product name | String | Product name of the device | Read-only | Reboot not required |
| Protection mode enabled | Boolean | Disable application and firmware updates to the device. | Read/Write | Reboot required |
| System Manager version | String | Version of the System Manager on the device | Read/Write | Reboot required |
| Total on time | UInt32 | Total power on time of the device in hours | Read-only | Reboot not required |
| Free memory | UInt32 | Unused RAM memory in the HMI device in kilobytes | Read-only | Reboot not required |
| Total memory | UInt32 | Total RAM memory in the HMI device in kilobytes | Read-only | Reboot not required |
| Used memory | UInt32 | Used RAM memory in the HMI device in kilobytes | Read-only | Reboot not required |
| Free storage | UInt32 | Nonvolatile storage in the HMI device in kilobytes | Read-only | Reboot not required |
| Total storage | UInt32 | Total nonvolatile storage in the HMI device in kilobytes | Read-only | Reboot not required |
| Used storage | UInt32 | Used nonvolatile storage in the HMI device in kilobytes | Read-only | Reboot not required |