Preparing to replace an access control unit - Security Center 5.12

Before replacing an access control unit with a different one, ensure that both units meet the replacement criteria, then back up the existing configuration, and reconfigure the units as required.

1. Back up the Directory database from Server Admin.
2. Upgrade the new unit to a firmware version equal to or newer than the old unit's firmware.
3. For Synergis Cloud Link units, back up the unit configuration files.
   NOTE: If the old unit is no longer reachable, and you don’t have a backup file, then you must manually configure the new unit to match the old one. Add the hardware that was on the old unit to the new one before replacing it. This isn’t required for the Mercury or Honeywell controller integrations.
4. Physically disconnect the old unit and make sure it’s offline in Security Center ().
5. Physically install the new unit.
6. For RS-485 integrations, physically disconnect the RS-485 interface modules from the old unit and connect them to the new unit using the same channels.
   IMPORTANT: Don’t change the physical addresses of the interface modules.
7. For Synergis Cloud Link units, restore the old unit's configuration files on the new unit.
8. Add the new unit in Security Center:
   • Add the Synergis Cloud Link unit.
     NOTE: To use the old unit's IP address on the new unit, configure the old unit to use an unused IP address. IP addresses are configured on the unit's Properties page in Config Tool.
   • Add the HID unit.