etm / opcua-smart Goto Github PK

Hi! The reserved word 'return' is not accepted when call the method, and this aborted.

##Server
t.add_method :MethodX,
            inputarg1: OPCUA::TYPES::INT32 do |node, inputarg1|
            p "Argument: #{inputarg1}"
            return inputarg1 + 1
end

##Client
p node.call 1

What I do wrong? tnks

When execute, show this error:
`require_relative': cannot load such file -- /home/user/opcua-smart/lib/opcua/client.so (LoadError)

how fix this error?

Hello,
I'm trying to use the gem, I have compiled and installed the open62541 library in my environment.
When I try to install the gem got:

_Installing opcua 0.21 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory: /tmp/bundler20201215-19767-16wmwjpopcua-0.21/gems/opcua-0.21/ext/opcua/server
/usr/local/bin/ruby -I /usr/local/lib/ruby/2.6.0 -r ./siteconf20201215-19767-12k0s4e.rb extconf.rb
creating Makefile
current directory: /tmp/bundler20201215-19767-16wmwjpopcua-0.21/gems/opcua-0.21/ext/opcua/server
make "DESTDIR=" clean
current directory: /tmp/bundler20201215-19767-16wmwjpopcua-0.21/gems/opcua-0.21/ext/opcua/server
make "DESTDIR="
compiling finders.c

In file included from finders.c:1:
./finders.h:4:10: fatal error: 'open62541.h' file not found
#include <open62541.h>
^~~~~~~~~~~~~
1 error generated.
*** Error code 1_

I saw that the file not found is not in the include dir, but after manually adding it from the project legacy folder I've got the same error.

What am I doing wrong?

Thanks

Nicolò :)

Hi,

I used the following example code for connecting to a OPCUA server:

require 'opcua/client'
client = OPCUA::Client.new("opc.tcp://192.168.1.50:4840")
client.subscription_interval = 100 # default 500

while true do

  if (node = client.get 2, 3)  # get node from nodeid
    #p node
    p node.value
  else
    p 'invalid nodeid'
  end
  
  sleep(2)

end

Somehow you need to set the node ID instead of the string as given in de example.
I run for testing a python opcua server with intergers and strings.
When I use the ID for the string variable the node.value changes to this value but when I use the ID for a interger variable then it gives back 'nil'.

Do you know what I am doing wrong?

Thanks in advance! @etm

Hi,

I am trying to use this gem on my raspberry Pi 4 with smashing dashboard but when I run "smashing start" I get the following error:

bundler: failed to load command: thin (/usr/local/bin/thin)
NameError: uninitialized constant OPCUA
/home/pi/Documents/pi_dashboard/jobs/table.rb:5:in <top (required)>' /var/lib/gems/2.5.0/gems/smashing-1.3.5/lib/dashing/app.rb:177:in require'
/var/lib/gems/2.5.0/gems/smashing-1.3.5/lib/dashing/app.rb:177:in block in require_glob' /var/lib/gems/2.5.0/gems/smashing-1.3.5/lib/dashing/app.rb:176:in each'
/var/lib/gems/2.5.0/gems/smashing-1.3.5/lib/dashing/app.rb:176:in require_glob' /var/lib/gems/2.5.0/gems/smashing-1.3.5/lib/dashing/app.rb:187:in <top (required)>'
/var/lib/gems/2.5.0/gems/smashing-1.3.5/lib/dashing.rb:3:in require' /var/lib/gems/2.5.0/gems/smashing-1.3.5/lib/dashing.rb:3:in <top (required)>'
config.ru:1:in require' config.ru:1:in block in

My .rb file looks like the following:

#require_relative '../lib/opcua/client'
#require opcua/client

client = OPCUA::Client.new("opc.tcp://192.168.1.50:4840")
client.subscription_interval = 100

if (node = client.get 2, 'Pressure')
p node
p node.value
else
p 'invalid nodeid'
end

When I run "ldconfig -p | grep libopen6" I get this:
libopen62541.so.1 (libc6,hard-float) => /usr/local/lib/libopen62541.so.1
libopen62541.so (libc6,hard-float) => /usr/local/lib/libopen62541.so

Hoppefully you can help me.

Thanks in advance!!

When defining two types like:

server.add_namespace "https://centurio.work/ur10"

  tt = server.types.add_object_type(:TargetType).tap{ |t|
    t.add_variable :JointPositions
  }
  #causes errors, because both Jointpositions got the same nodeid
  at = server.types.add_object_type(:ActualType).tap{ |t|
    t.add_variable :JointPositions
  }

i get an error

AddNodes: Node could not add the new node to the nodestore with error code BadNodeIdExists

because both JointPositions nodes got the same Nodeid.

Provide method for deleting nodes in address space. This is required for dynamic construction of the address space.

I have defined the following code

at = server.types.add_object_type(:ActualType).tap{ |t|
    t.add_variable :JointPositions
    t.add_variable :JointVelocities
    t.add_variable :JointCurrents
  }

  rt = server.types.add_object_type(:RobotType).tap{ |r|
    r.add_object :Actual, at, OPCUA::MANDATORY

When i connect to the server with UA Expert all nodes of the type were instantiated twice. Once with a numeric random NodeId and once with the string NodeId.

When i manifest the ActualType after instantiation of the RobotType everthing works.

support for opc ua arrays