OpcUA.MethodNode (Opex62541 v0.1.2) View Source
Methods define callable functions and are invoked using the :ref:
Call <method-services> service. MethodNodes may have special properties (variable
childen with a
hasProperty reference) with the :ref:
(0, "InputArguments") and
(0, "OutputArguments"). The input and output
arguments are both described via an array of
UA_Argument. While the Call
service uses a generic array of :ref:
variant for input and output, the
actual argument values are checked to match the signature of the MethodNode.
Note that the same MethodNode may be referenced from several objects (and object types). For this, the NodeId of the method and of the object providing context is part of a Call request message.