The following table provides two process values and an example of their data associated with it. Note that for the DeviationAlarm, most of the optional Nodes are not shown, and for the LimitAlarm, also most of the mandatory nodes are hidden. They are set similar to the DeviationAlarm.

Table 29 – Examples for Process Values

Node

Pressure

Temperature

SignalTag (M)

“Sigxyz123”

“T001”

AnalogSignal (M)

200

65

ValuePrecision (O)

-2 (Rounded to next 100)

-

EURange (M)

{-100.0, 250.0}

{-20.0, 180.0}

InstrumentRange (O)

{-500.0, 350.0}

{-200.0, 300.0}

EngineeringUnits (M)

Pa (Pascal)

°C

ActualValue (O)

200

65

SimulationValue (O)

100

20

SimulationState (O)

FALSE

FALSE

Damping (O)

-

-

PercentageValue (O)

601

-

EURange(M)

{0.0,100.0}

-

EngineeringUnits(M)

pct (Percent)

-

LowLowLimit (O)

20

5

EngineeringUnits(M)

Pa (Pascal)

pct (Percent)

LowLimit (O)

50

10

EngineeringUnits(M)

Pa (Pascal)

pct (Percent)

HighLimit (O)

230

80

EngineeringUnits(M)

Pa (Pascal)

pct (Percent)

HighHighLimit (O)

250

90

EngineeringUnits(M)

Pa (Pascal)

pct (Percent)

Status (O)

6 (WITHIN_TOLERANCE)

7 (ABOVE_HIGH_DEVIATION)

EnumValues (M)

As in Table 3

As in Table 3

AlarmSuppression (O)

0 (No alarm suppression)

-

EnumValues (M)

As in Table 3

-

ProcessValueSetpoint (O)

200

20

.SubstituteValue (O)

210

-

LowLowDeviation (O)

-40

-

EngineeringUnits (M)

Pa (Pascal)

-

LowDeviation (O)

-20

-5

EngineeringUnits (M)

Pa (Pascal)

pct (Percent)

HighDeviation (O)

20

5

EngineeringUnits (M)

Pa (Pascal)

pct (Percent)

HighHighDeviation (O)

40

-

EngineeringUnits (M)

Pa (Pascal)

-

.DeviationSensitivity (O)

1 – Middle

-

EnumValues (M)

As in Table 7

-

.AutoDeviationAdjustment (O)

FALSE

-

.EURange (M)

{-100.0, 250.0}

{-10.0, 70.0}

.InstrumentRange (O)

{-500.0, 350.0}

-

.EngineeringUnits (M)

Pa (Pascal)

°C

DeviationAlarm (O)

SetpointNode (M)

NodeId of Setpoint

NodeId of Setpoint

LimitState (M)

CurrentState (M)

BAD status

“High”

CurrentState.Id (M)

BAD status

2 (StateNumber of High)

LowLowLimit (O)

-40

-

LowLimit (O)

-20

-10 (– 5 percent to °C based on EURange) 2

HighLimit (O)

20

+10 (+5 percent to °C based on EURange) 2

HighHighLimit (O)

40

-

ActiveState (M)

“Inactive”

“Active”

ActiveState.Id (M)

FALSE

TRUE

InputNode (M)

NodeId of SignalObject

NodeId of SignalObject

AckedState (M)

“Acknowledged”

“Acknowledged”

AckedState.Id (M)

TRUE (Auto-acknowledged)

TRUE (Auto-acknowledged)

SuppressedOrShelved (M)

FALSE

FALSE

ConditionClassId (M)

NodeId of ProcessConditionClassType (static)

NodeId of ProcessConditionClassType (static)

ConditionClassName (M)

“ProcessConditionClassType” (static)

“ProcessConditionClassType” (static)

ConditionName (M)

“DeviationAlarm” (static)

“DeviationAlarm” (static)

BranchId (M)

NULL

NULL

Retain (M)

FALSE

TRUE

EnabledState (M)

“Enabled”

“Enabled”

EnabledState.Id (M)

TRUE

TRUE

Quality (M)

GOOD

GOOD

LastSeverity (M)

600

10

Comment (M)

“” (no comment set)

“” (no comment set)

ClientUserId (M)

“” (no comment set)

“” (no comment set)

EventId (M)

123435 (Unique in Server)

123436 (Unique in Server)

EventType (M)

NodeId of ExclusiveDeviationAlarmType (Static)

NodeId of ExclusiveDeviationAlarmType (Static)

SourceNode (M)

NodeId of SignalObject

NodeId of SignalObject

SourceName (M)

Name of SignalObject

Name of SignalObject

Time (M)

2022-06-02:10:00:00

2022-06-02:10:05:00

ReceiveTime (M)

2022-06-02:10:00:00

2022-06-02:10:05:00

Message (M)

“No Deviation”

“No Deviation”

Severity (M)

10

600

LimitAlarm

LimitState (M)

CurrentState (M)

BAD status

BAD status

CurrentState.Id (M)

BAD status

BAD status

LowLowLimit (O)

20

-10 (5 percent to °C based on EURange) 3

LowLimit (O)

50

0 (10 percent to °C based on EURange) 3

HighLimit (O)

230

140 (80 percent to °C based on EURange) 3

HighHighLimit (O)

250

160 (90 percent to °C based on EURange) 3

ActiveState (M)

“Inactive”

“Inactive”

ActiveState.Id (M)

FALSE

FALSE

1 The PercentageValue in the example is not calculated based on EURange but by some internal logic, also considering other parameters.

2 The EURange is from -20 to 180°C, -20 is 0% and +180 is 100%. The absolute deviation value based on a percentage value is “absolute_deviation_value = percentage_value * (max_value – min_value)”. For example, for +5% it is: absolute_deviation_value = 5/100 * 180°C-(-20°C) = 5/100 * 200°C = 10°C.

3 When calculating the absolute limits, in addition to calculating the absolute_deviation_value, it needs to be set into the context of the range, i.e. absolute_value = min_value + absolute_deviation_value. For example, for +5% it is absolute_value = -20°C +10°C = -10°C.

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