About granting access through facility codes with offline Mercury SIO boards

• By default, Synergis Softwire supports up to eight card formats per Mercury controller. Each facility code that you add counts as one card format, even if the facility codes are configured for the same card format.
  Note: To increase the number of supported card formats to 16, you can disable the Magstripe support option under the Advances settings section on the Mercury controller settings page. Magstripe is not supported when the Facility code option is selected as the door behavior for offline SIO boards, even if you enable the Magstripe support option.
• When the SIO board loses connection with the Mercury controller, and no card formats or facility codes are added in the Synergis™ Appliance Portal, the doors that the SIO board controls become locked, regardless of the state that they were in before the connection was lost.
• The following occurs when a credential is valid in Security Center, but its facility code is not added in the Synergis Appliance Portal:
  • If the Mercury controller disconnects from the Synergis Cloud Link unit, access is denied.
  • If the Mercury controller is connected to the Synergis Cloud Link unit, access is granted.

Mercury native area control, host decision handoff, and antipassback

When you configure the door behavior for offline SIO boards to use facility codes to grant access, access decisions vary based on what other features are enabled and how they work together.