Redundant device-specific system items
- Last UpdatedAug 20, 2024
- 1 minute read
These system items are specific to the Redundant Device.
|
System Item Name |
Type/Access Rights |
Description |
Values |
|---|---|---|---|
|
$SYS$ForceFailover |
Boolean/ |
This is required to achieve the failover condition to be forced by client. Note: By poking a value of "1" (True) into the Force Failover item, a client can conveniently switch to the secondary device. |
TRUE, FALSE |
|
$SYS$ActiveDevice |
String/Read |
This system item will show the current runtime active device. |
Node Hierarchy Name |
|
$SYS$FailoverTime |
Time/Read |
This system item will show the time at which the switch occurred. |
Time at which the switch occurred |
|
$SYS$StandbyDevice |
String/Read |
This system item will show the current runtime standby device. |
Node Hierarchy Name |
|
$SYS$SecondaryDevice |
Boolean/Read |
This system item will show the status of the secondary device. This is the status of the second device defined in the configuration and is not changed with any failover. RANGE: 0, 1 |
RANGE: 0, 1 (Contains the value of the system item $SYS$Status) |
|
$SYS$PrimaryDevice |
Boolean/Read |
This system item will show the status of the primary device. This is the status of the first device defined in the configuration and is not changed with any failover. RANGE: 0, 1 |
RANGE: 0, 1 (Contains the value of the system item $SYS$Status) |
|
$SYS$FailoverReason |
String/Read |
This system item will show the reason for the failover. |
Descriptive text "ForceFailover" or the value of the system item $SYS$ErrorText. |
Important! The Redundant Hierarchy, including the Device Group, is not hot-configurable, and requires a Reset on the Redundant Hierarchy to effect a configuration change.