OpcdaConnection
host
(string, required)
host
(string, required)Hostname or IP of the OPC DA server
Example: "192.168.0.1"
port
(integer)
port
(integer)Port of the OPC DA server
Default: 135
domain
(string)
domain
(string)Microsoft Windows domain of the OPC DA server
Default: "WORKGROUP"
username
(string, required)
username
(string, required)Username for OPC DA server (usually a user on the Windows computer of the OPC DA server)
Example: "user"
password
(string, required)
password
(string, required)Password for the user on the OPC DA server (usually the password of the Windows user)
Example: "user"
classId
(string, required)
classId
(string, required)Microsoft Windows DCOM class ID of the OPC DA server
Default: "F8582CF2-88FB-11D0-B850-00C0F0104305"
Example: "F8582CF2-88FB-11D0-B850-00C0F0104305"
group
(string)
group
(string)OPC DA group name for the tags that will be accessed
Default: "Connectware Group"
Example: "Some Name"
timeout
(integer)
timeout
(integer)Timeout, in milliseconds
Default: 5000
Examples: 2000
, 5000
, 10000
comVersionMinor
(integer)
comVersionMinor
(integer)The minor part of the DCOM protocol version. The major protocol version is fixed at 5, but the minor version can be configured to choose between 5.7 (default) or the older 5.4.
Default: 7
Examples: 4
, 7
connectionStrategy
(object)
connectionStrategy
(object)If a connection attempt fails, retries will be performed with increasing delay (waiting time) in between. The following parameters control how these delays behave.
Properties of the connectionStrategy
object:
initialDelay
(integer)
initialDelay
(integer)Delay (waiting time) of the first connection retry (in milliseconds). For subsequent retries, the delay will be increased according to the parameter incrementFactor which has a default value of 2.
Default: 1000
Additional restrictions:
Minimum:
1000
maxDelay
(integer)
maxDelay
(integer)Maximum delay (waiting time) to wait until the next retry (in milliseconds). The delay (waiting time) for any subsequent connection retry will not be larger than this value. Must be strictly greater than initialDelay.
Default: 30000
incrementFactor
(integer)
incrementFactor
(integer)The factor used to increment initialDelay up to maxDelay. For example if initialDelay is set to 1000 and maxDelay to 5000 the values for the delay would be 1000, 2000, 4000, 5000.
Default: 2
Additional restrictions:
Minimum:
2
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