Siemens SIMATIC PCS 7 Function Manual page 63

PCS 7 OS
Came in, went out
message without
acknowledgment
Message acknowledged by
system
(message
still pending)
Message acknowledged by
system
(message
no longer pending)
Emergency acknowledged
message
(message still pending)
Emergency acknowledged
message
(message no longer
pending)
Note
Historical alarms and events are not acknowledged. The OPC A&E historical events interface
has read access only.
The following table shows the mapping of the "ChangeMask" and "New State" parameters to
the properties of the OPCEvent class of the "OPCSiemensAlarmEventAutomation" type library.
ChangeMask / NewState
OPC_CHANGE_ACTIVE_STATE
OPC_CHANGE_ENABLE_STATE
OPC_CHANGE_ACK_STATE
OPC_CONDITION_ACTIVE
OPC_CONDITION_ENABLED
OPC_CONDITION_ACKED
OpenPCS 7
Function Manual, 05/2012, A5E02780178-02
NewState
OPC_CONDITION_ENABLED
OPC_CONDITION_ACTIVE
OPC_CONDITION_ACKED
OPC_CONDITION_ENABLED
OPC_CONDITION_ACKED
OPC_CONDITION_ENABLED
OPC_CONDITION_ACTIVE
OPC_CONDITION_ACKED
OPC_CONDITION_ENABLED
OPC_CONDITION_ACKED
OPC_CONDITION_ENABLED
Properties of the OPCEvent class
ChangeActiveState
ChangeEnableState
ChangeAckState
ConditionActive
ConditionEnabled
ConditionAcknowledged
OpenPCS 7 interface
6.5 OPC Alarms and Events (OPC A&E)
ChangeState
OPC_CHANGE_ACK_STATE
OPC_CHANGE_ACK_STATE
OPC_CHANGE_ACK_STATE
OPC_CHANGE_ACK_STATE
OPC_CHANGE_ACK_STATE
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