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Parameter nameMeaningUnitDefault value

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ct
ct
Client Type

Type of used client (driver for OPC UA communication):

  • Default - an original implementation of OPC UA client. Supports authentication (parameter Authentication Type) of Anonymous/Username types only. It does not support message encryption or signing.
  • Secure - a new implementation of OPC UA client with security support. Supports advanced authentication, encryption, and message signing capabilities.

Default

Secure

Default

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sn
sn
Session Name

Session text identifier. Session identifier should be a unique within the client instance, making it possible to search problems faster in the client or server logs.StringKom process
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cl
cl
Requested Channel Lifetime
The channel must be reopened before this time limit elapses. If the time is exceeded, the channel will be closed and unable to change data.hh:mm:ss01:00:00
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st
st
Requested Session Timeout
Any message should be changed between client and server before this time limit elapses. If it is not sent, the sources within the session that are kept on the server are released. The primary work of this parameter is to remove the sessions that became inactive because of some unexpected reason.mm:ss01:00
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at
at
Authentication Type
Type of authentication used with the OPC UA server. Supported types are:
  • Anonymous: logon is anonymous
  • Username: logon uses user name and password
  • Certificate: logon uses x509 certificate (only for Client Type = Secure)
Anonymous / UsernameAnonymous
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tun
tun
Token User Name
User name used in authentication if Authentication type = Username.

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pwd
pwd
Token Password
Password used in authentication if Authentication type = Username.

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sp
sp
Security Policy

Security policy (only for Client Type = Secure; for Client TypeDefault a security policy None is used):

  • None - security policy None
  • Basic128Rsa15 - security policy Basic128Rsa15 (considered to be obsolete due to using a weak SHA-1 hashing algorithm)
  • Basic256 - security policy Basic256 (considered to be obsolete due to using a weak SHA-1 hashing algorithm)
  • Basic256Sha256 - security policy Basic256Sha256
  • Aes128Sha256RsaOaep - security policy Aes128Sha256RsaOaep
  • Aes256Sha256RsaPss - security policy Aes256Sha256RsaPss
None
Basic128Rsa15
Basic256
Basic256Sha256
Aes128Sha256RsaOaep
Aes256Sha256RsaPss
None

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sm
sm
SecurityMode

A mode of message security in OPC UA communication (only for Client Type = Secure; for Client TypeDefault a mode of message security None is used):

  • None - messages are not secured 
  • Sign - messages are signed (protected against modification, but not against eavesdropping)
  • Sign & Encrypt- messages are signed and encrypted (protected both against modification and eavesdropping)
None
Sign
Sign & Encrypt
None

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rcd
rcd
Reconnect Delay

Waiting after the connection is broken before the connection is re-established.mm:ss.mss00:10.000

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ecd
ecd
Error Connect Delay

Waiting after an unsuccessful connection attempt.mm:ss.mss00:02.000

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dm
dm
Debug Mode

It changes the number of information about communication. We recommend enabling the Extended/Full modes only when detecting the problems and debugging the communication. The "Full + Trace (Secure only)" mode is valid only for Client Type = Secure.Normal/Extended/Full/
Full + Trace (Secure only)
Normal
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dt
dt
Debug Threads
The parameter defines the thread(s) that will send the debug info about the communication.Receiving/Sending/Others treads/All threadsAll threads

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