Hi all
I have a sample code to implement opc client in Python. i use a
file .py making by makepy with pythonwin for Com Interface.
i can get all server in machine, connect to server opc, disconnect,
add group, add item, read, write item in server opc.
import win32com.client # librairie pour utiliser l'interface COM/DCOM
from win32com.client import gencache
gencache.EnsureModule('{DFB83232-A952-11D2-A46B-00C04F796375}', 0, 1,
0)
for svr in opcserver.GetOPCServers():
print svr
#connect to server OPC Demo Simulation from Matrikon
opcserver.Connect('Matrikon.OPC.Simulation.1')
# Instance object Groups
groups=opcserver.OPCGroups
#add group
group=groups.Add('Group1')
#instance onject Items
items=group.OPCItems
# add item in server opc
tem=items.AddItem('File1.item1',1)
#read item value
item.Read(win32com.client.constants.OPCDevice)
# write a new value
item.Write(100)
#read item value
item.Read(win32com.client.constants.OPCDevice)
#if no pb you have 100 :)
#Disconnect
#opcserver.Disconnect()
BUT, and BUT, i want to use a event from opc server for uodating item
value with this below class. And i don't konw how make it!!!!!!!!
help me plz
opcserver=win32com.client.Dispatch('OPC.Automation.1')
and now i want to use events from opc server. in a class:
class DIOPCGroupEvent:
class DIOPCGroupsEvent:
class DIOPCServerEvent:
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