The Electronic Signature option does not support Acknowledge All alarms capability. It is encouraged that you disable this function from the Alarm Summary object by clearing the Allow Acknowledge All Alarms check box on the Operator tab of the Alarm Summary Configuration. This removes the Acknowledge All option from the right-click menu and prevents an operator from acknowledging all alarms from the Alarm Summary object.
IMPORTANT: If you do not disable the Allow Acknowledge All Alarms option, you risk the chance of allowing operators to acknowledge alarms in an unsecured environment. This option is enabled by default in pictures created in iFIX 3.0 and higher.
Operators cannot sign for alarm acknowledgements when using AcknowledgeAll through the Alarm Summary object or through a script.
