Schneider Electric 840 USE 106 0 WARNING!!

Using a Quantum IEC Hot Standby System

122 840 USE 106 00 January 2003

Advanced

Options button When selecting the Advanced Options butt on in the Hot Standby dialog you get the

opportunity to allow different firmware versions on the Primary and Standby

controller while running in full Hot Standby mode.

This lets you upgrade the controllers step by step to a new firmware version w ithout

having to shutdown the system. Since this is only necessary in rare situations, it is

recommended that you disable this mode by configuration and to enable it by the

reference data editor when needed. By default, the controllers must have the same

versions of firmware. This means the Standby controller would not go online while

having a newer or older firmware version than the one on the Primary controller.

Note: This option is available only in Hot Standby systems already running with

Concept 2.5.

Advanced Options

WARNING!!

Selecting “Without Stopping” overrides

all safety checking between

Primary and Hot Standby controllers.

Use with extreme caution!!!

Exec Upgrade

Without Stopping

Application Stopped

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