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AVEVA™ Communication Drivers

OPC UA client diagnostic items

  • Last UpdatedAug 19, 2024
  • 1 minute read

The UA Client object contains diagnostic items for the entire service. The following syntax can be used to access a global diagnostic item:

/$SYS$DIAG/UAClient/<Item>

where,

<Item>: one of the diagnostic item names from the following table.

<Item>

Type

R/W

Description

CertificateExpiry

DateTime

R

Date & Time of application certificate expiry (Time in UTC)

CertificateSubject

String

R

Certificate subject name

DefaultNamespace

String

R

Default Namespace configured by the user

IsAnonymousUser

BOOL

R

Anonymous User for UA Server session = True, User credential are provided for UA Server session

IsConnected

BOOL

R

At least one UA Server session established=True, No sessions established=False

KeepAliveInterval

Int32

R

Keep Alive interval in milliseconds

MessagePolicy

Int32

R

0=none, 1=Sign, 2=Sign&Encrypt

NamespaceAliases

String[]

R

Array of namespace aliases.

NamespaceUris

String[]

R

Array of namespace URIs

ResetTotals

BOOL

R/W

Setting this to True (1) resets the value of TotalConnectionRetries system item

SecurityPolicy

Int32

R

0=none, 1=Basic256, 2=Basic128Rsa15

ServerUri

String

R

End point value of the OPC UA Server connected from Gateway Communication Driver

TotalConnectionRetries 

Int32

R

Number of connection retries since the Gateway Communication Driver starts.

Note: Item in intended to indicate the number of connection retries between the UA Client and the UA Server.

UserName

String

R

User Name which is configured for secured session with UA Server (empty if IsAnonymousUser=True)

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