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import sys |
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sys.path.insert(0, "..") |
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3
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import logging |
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4
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5
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from opcua import Client |
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from opcua import uaprotocol as ua |
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8
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9
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class SubHandler(object): |
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10
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11
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""" |
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12
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Client to subscription. It will receive events from server |
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""" |
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15
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def datachange_notification(self, node, val, data): |
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print("Python: New data change event", node, val) |
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18
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def event_notification(self, event): |
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print("Python: New event", event) |
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21
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22
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if __name__ == "__main__": |
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#from IPython import embed |
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logging.basicConfig(level=logging.WARN) |
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client = Client("opc.tcp://192.168.56.100:49320/OPCUA/SimulationServer/") |
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#client = Client("opc.tcp://192.168.56.100:4841/OPCUA/SimulationServer/") |
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#client = Client("opc.tcp://olivier:olivierpass@localhost:53530/OPCUA/SimulationServer/") |
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try: |
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client.connect() |
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root = client.get_root_node() |
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print("Root is", root) |
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print("childs of root are: ", root.get_children()) |
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print("name of root is", root.get_browse_name()) |
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objects = client.get_objects_node() |
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print("childs og objects are: ", objects.get_children()) |
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37
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tag1 = client.get_node("ns=2;s=Channel1.Device1.Tag1") |
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print("tag1 is: {} with value {} ".format(tag1, tag1.get_value())) |
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tag2 = client.get_node("ns=2;s=Channel1.Device1.Tag2") |
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print("tag2 is: {} with value {} ".format(tag2, tag2.get_value())) |
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handler = SubHandler() |
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sub = client.create_subscription(500, handler) |
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handle = sub.subscribe_data_change(tag1) |
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handle = sub.subscribe_data_change(tag2) |
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47
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48
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from IPython import embed |
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49
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embed() |
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50
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51
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52
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sub.unsubscribe(handle) |
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53
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sub.delete() |
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54
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finally: |
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55
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client.disconnect() |
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56
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FreeOpcUa /
python-opcua
