Stratus Technologies

Redundency with ztC Edge from Stratus Technologies

As modern factories continue to move towards automation and system linkage, reliability and connectivity become increasingly vital. This results in many cases where redundant systems are desirable.

One verified redundant method for the Takebishi original industrial communication software "DeviceXPlorer OPC Server" is with the continuous edge server "ztC Edge" from Stratus Technology. The verified results are shown here.

Verified Construction

A system was constructed where PLC information was periodically obtained via a redundant DeviceXPlorer OPC Server with the continuous edge server ztC Edge 250i and the OPC Client DeviceXPlorer Data Logger. The time required for failover during error occurence was measured.

Verified Results

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Mode	Test content	Test result
FT (Continuous)	Operating PC power source disconnected.	Switchover completed in about 2-4 seconds. DxpSERVER continuously processed.
FT (Continuous)	Network disconnected.	Switchover completed in about 2-4 seconds. DxpSERVER continuously processed.
HA (High-availability)	Operating PC power source disconnected.	Switchover completed in about 50 seconds. Operation resumed after restarting OS.
HA (High-availability)	Network disconnected.	Switchover completed in about 2-4 seconds. DxpSERVER continuously processed.
Shared	Exported a virtual machine, and launched the original to confirm the license.	Confirmed that the license was not corrupted.
Shared	Exported a virtual machine, and launched the copy to confirm the license.	Confirmed that the license was not corrupted.

* These test results are meant to be used as a reference, and not as a guarantee of product functions.
*Switchover time may change according to the timing of error occurence.

Click here (external link) for more information about ztC Edge by Stratus Technology.