Redundant Device-specific system items
- Last UpdatedAug 19, 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, 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 |
|
$SYS$Secondary |
Boolean/Read |
This system item will show the status of the secondary device, as 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 as 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. |
Note: The Redundant Hierarchy, including the Device Group, is not hot-configurable, and requires a Reset on the Redundant Hierarchy to effect a configuration change.