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Scope: Core (OPC-10000-*) All specs

20 result(s) for process values

OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

3.1.2.8 process values

process values input and output data (in a safety PDU) that are required to control an automated process
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

5.3 Safety measures

SafetyConsumer is defined in such a way that it will cease to deliver actual process values to the safety application but will deliver fail-safe substitute values instead. In addition
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

5.4 Safety communication layer structure

fail-safe substitute values are delivered to the safety application instead of the received process values . In contrast, it is not necessary for a SafetyProvider to know the SafetyConsumerID ... SafetyConsumer and will provide its process values to any SafetyConsumer requesting it. SafetyProviders can not detect communication errors. All required error detection is performed by the SafetyConsumer
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

6.3.3.2 SAPI of SafetyProvider

used to trigger a return from fail-safe substitute values ( FSV ) to actual process values ( PV ), see B.3.4 . OperatorAckRequested Boolean O Indicates that an operator acknowledge is requested ... instead of PV to the safety application program. NOTE If the replacement of process values by FSV is to be controllable in a more fine-grained way, this
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

6.3.4.2 SAPI of SafetyConsumer

SafetyConsumer SAPI Term Type I/O Definition SafetyData Structure O This output either delivers the process values received from the SafetyProvider in the SPDU field SafetyData , or FSV . NonSafetyData Structure ... This output delivers the non-safety process values (e.g. diagnostic information) which were sent together with safe data, see 7.2.1.11 Enable Boolean I By changing this input
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

6.3.4.3 Motivation for SAPI Operator Acknowledge (OperatorAckConsumer)

assumption is still valid, and switches to fail-safe substitute values otherwise. Returning to process values then requires an operator acknowledgment. Operator Acknowledge is expected to be initiated
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

6.3.4.5 Motivation for SPI SafetyOperatorAckNecessary

parameter determines whether automatic restart (i.e. automatically switching back from fail-safe values to process values ) is possible for the safety function or not. It is expected
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

7.2.1.5 ResponseSPDU: SafetyData

contain qualifiers for a fine-grained activation of fail-safe substitute values. For valid process values , the respective qualifiers are set to 1 (good), whereas the value ... used for invalid values. Invalid process values are replaced by fail-safe substitute values in the SafetyConsumer 's safety application
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

7.2.2.2 SafetyProvider and SafetyConsumer Sequence diagram

shall answer all requests. The returned ResponseSPDUs may contain different values (e.g. currently available process values ) or contain the initially returned values. [RQ7.11] For each SafetyProvider , the implemented choice ... behaviour according to RQ7.10 (i.e. whether currently available process values or initially returned values will be used) shall be documented in the corresponding safety manual. NOTE 2 Since a SafetyConsumer
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

B.3.4 Use case 3: bidirectional communication and single, one-sided OA

bidirectional connection. Both sides will cease delivering fail-safe values and continue sending process values . This is accomplished by connecting OperatorAckProvider with OperatorAckConsumer at the SafetyConsumer of controller B. Activating
OPC-10000-15 – OPC Unified Architecture - Part 15: Safety

B.3.5 Use case 4: bidirectional communication and single, two-sided OA

bidirectional connection. Both sides will cease delivering fail-safe values and continue sending process values . This is accomplished by the logic circuits shown in the safety applications
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

5.1 Example Serialize RIO Channel Groups

shows a Channel Group containing two output channel Objects , a configuration Object and Process Values . Figure 4 - RIO Channel Group From the Clients' perspective, certain use cases when accessing ... single subtrees are supported by the Server . A Client might be interested in the Process Values provided in the "Values" array and the associated Process Value Qualifiers
OPC-30142 – OPC UA for PROFINET Remote IO

3.2.1 Controller

Controller A Controller is a host running a program which reads and writes the Process Values used to control an automated process. The control is usually done in cycles consisting
OPC-30142 – OPC UA for PROFINET Remote IO

5 Use cases

with continuously refined methods and algorithms to identify the potential for economic improvements. Providing Process Values as components of RIO Channel Objects and/or Process Value arrays or bit fields
OPC-30142 – OPC UA for PROFINET Remote IO

6.2 OPC UA for RIO Channel Model

Figure 8 contains an analog Process Value . The VariableType used to represent analog Process Values is RioPaAnalogProcessValueVariableType , the data type used by this VariableType is RioPaAnalogProcessValueDataType . Configuration properties ... Input Channels according to RIOforPA is RioPaAnalogInputConfigVariableType . Figure 9 shows all RIO Channel ObjectTypes , Process Value VariableTypes and configuration ObjectTypes which are defined in this specification to cover digital
OPC-30142 – OPC UA for PROFINET Remote IO

6.4 Connection of PROFINET Aspect and Functional Aspect

analog Input according to RIOforPA to illustrate the relationship between the different aspects. The Process Values and their qualifiers are transmitted consecutively and are available for the user program ... Value" and "03_AI_2_Value" representing the Process Values in the PnIoTelegramType Object "Input" connect to the "ProcessValue" Variables which are components
OPC-30142 – OPC UA for PROFINET Remote IO

6.8 Process Value Qualifier and StatusCode Relationship

Process Value Qualifier and StatusCode Relationship When returning the Value of Process Values , the Server shall set the StatusCode member of the DataValue structures returned by the Read Service
OPC-30142 – OPC UA for PROFINET Remote IO

6.8.3 StatusCode of Arrays of Process Values

StatusCode of Arrays of Process Values When returning arrays of Process Values , the Server shall set the Severity of the StatusCode to "Bad" if one or more Process ... Severity returned shall be "Uncertain" if one or more Process Values in the returned array are "Uncertain". The Severity returned shall be "Good" only
OPC-30142 – OPC UA for PROFINET Remote IO

9.2 Process Value VariableTypes

different VariableTypes together with their DataTypes defined for each profile for digital and analog Process Values . Table 62 - RIO Process Value VariableTypes and DataTypes Profile Digital Channel Types Process Value
OPC-30142 – OPC UA for PROFINET Remote IO

11.3 HasRioProcessVariable

this ReferenceType is to connect RioChannelGroup Objects with bit field and array Variables containing Process Values . The HasRioProcessVariable Reference is formally defined in Table 133 . Table 133 - HasRioProcessVariable Definition Attributes ... References NodeClass BrowseName Comment Subtype of HasComponent from OPC 10000-5 . Conformance Units PNRIO Process Variables