Schneider Electric 840 USE 106 0 manual Options for, Software Control, Stage Description Comment

			Using a Quantum IEC Hot Standby System
Options for	Option 1
Software Control
	Stage	Description		Comment
Example
	1	Change the setting on the Hot		To do this, you must shut down the
		Standby dialog.		system and make the necessary change
				in the dialog, then power up the system
				again.
	2	Download the new configuration.
	Option 2
	Stage	Description		Comment
	1	Connect Concept to your Primary
		controller.
	2	Call up the Reference Data Editor
		(RDE).
	3	Place the Hot Standby command		The operating mode of controller B is
		register and the Hot Standby status		determined by the state of bit 14 of the
		register in the RDE.		command register. If controller B is
				offline, bit 14 is set to 0.
	4	To put the controller in RUN mode,		Controller B immediately goes into RUN
		change the state of bit 14 to 1.		mode.
	Note: The advantage of option 2 is that the Hot Standby system does not have to be
	shut down in order to change its status.

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