Using a Quantum 984 HSBY System

lTherefore, the number you specify for the command register must be in the range of 4x registers you specify in the State RAM area in State RAM dialog. If you are using the 12K option, the command register must be one of the first 9000 4x registers.

The command register must not be within the range of the nontransfer area, which you specify in the nontransfer area of the Hot Standby dialog.

CAUTION

Hot Standby Command Register Hazard

Be sure the register you select as the Hot Standby command register is reserved for this purpose and not used for other purposes elsewhere in user logic.

Failure to follow this precaution can result in injury or equipment damage.

CAUTION

Hot Standby Dialog Hazard

If you intend to use the Hot Standby dialog to configure the command register and the CHS instruction to modify the command register during runtime, make sure that you specify the same register as the command register in Hot Standby dialog and the top node of the CHS block. If you use different numbers for the command register, the changes that you make via the Zoom screen are not applied to the real Hot Standby command register.

Failure to follow this precaution can result in injury or equipment damage.

840 USE 106 00 January 2003

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Schneider Electric 840 USE 106 0 manual Hot Standby Command Register Hazard