If the alarm system contains both alarm tiles and VDU alarm displays, each should have its own set of controls.
Additional Information:
If alarm information is presented redundantly on tile and VDU displays, then alarm acknowledgment via one device (i.e., either the VDU or tile panel control station) should cause the redundant alarm to be automatically acknowledged on the other device. All other control actions (acknowledge, reset and test) should be specific to the workstation associated with the alarm (see also Guideline 4.3.2-1).