| Horner - Hot-Backup Operator Control Station (OCS) |
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Category: Horner Date Added: 02/13/2009 |
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Hot-Backup Operator Control Station (OCS)
for High Availability Systems Learn how to use OCS in a “hot backup configuration” to maintain
operations should one system fail, or need to be shut down for updates (especially important for industries like food and pharmaceutical). Application Overview Any two Operator Control Stations (OCS) in combination with SmartStix™ I/O can be set up to be a High Availability System. In this case, High Availability is defined as the ability of the Slave controller to take over control of the I/O in the event of the ‘Master’ controller going off line for some reason and then the Slave giving back control when the Master is up and running again. In the example discussed below, an XLe OCS is programmed to be the Master using Network ID 1 and a QX451 using Network ID 253 is programmed to be the Slave. (The QX451 could also be programmed to perform other tasks in addition to being the Slave controller). They are controlling two SmartStix I/O blocks, a 32 point output block at ID 10 and a 32 point input block at ID 11. (The actual Network ID numbers are not significant except to this program.) |
pdf/horner/hotbackup.pdf
| Operator Control Station - QX Touchscreen OCS |
| Operator Control Station - XLt Touch Screen OCS |
| Operator Control Stations - XLe Graphical OCS |
| SmartStack I/O with fiber optic expansion |
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