create multiple I/O servers with different polling cycle with offsets to avoid request/polling cycles from two I/O servers overlapping?

John003478

posted Jul 28 at 4:21 pm

Is it possible to create multiple I/O servers with different polling cycle with offsets to avoid request/polling cycles from two I/O servers overlapping?

https://www.vtscada.com/help/Content/D_Tags/Dev_PollingDriver.htm

Is it possible to create multiple I/O servers with different polling cycle with offsets to avoid request/polling cycles from two I/O servers overlapping? https://www.vtscada.com/help/Content/D_Tags/Dev_PollingDriver.htm ![68879564e601a](serve/attachment&path=68879564e601a)

edited Jul 28 at 4:23 pm

Dave - VTScada

posted Jul 28 at 5:34 pm

In a case of a redundant server system, only the primary server will poll the I/O. The VTScada - VTScada sync service will distribute the read values to each of the redundant servers.

If the current polling server goes offline for any reason, only the next server in the cue will take over polling the I/O and will synchronize the data to the backup servers for storage and any connected clients for viewing.

In a case of a redundant server system, only the primary server will poll the I/O. The VTScada - VTScada sync service will distribute the read values to each of the redundant servers. If the current polling server goes offline for any reason, only the next server in the cue will take over polling the I/O and will synchronize the data to the backup servers for storage and any connected clients for viewing.

Trihedral Engineering Ltd.

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