47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
from opcua import ua, Client
|
||
|
||
|
||
class Py2opcua:
|
||
"""
|
||
将三元检测补偿值写入opcua服务器
|
||
"""
|
||
|
||
def __init__(self, url='opc.tcp://192.168.2.99:4840'):
|
||
self.client = Client(url)
|
||
|
||
# 连接客户端
|
||
# def connect(self):
|
||
# try:
|
||
# self.client.connect()
|
||
# print("opcua服务器连接成功，可以写入")
|
||
# return self.client
|
||
# except Exception as e:
|
||
# print("opcua服务器连接失败，请检查" + str(e))
|
||
|
||
def write(self, temp_dict):
|
||
"""
|
||
补偿值写入方法，参数是一个字典，键是节点名，值是补偿值
|
||
:param temp_dict:
|
||
:return:
|
||
"""
|
||
# try:
|
||
self.client.connect()
|
||
# print("opcua服务器连接成功，可以写入")
|
||
# return self.client
|
||
# except Exception as e:
|
||
# print("opcua服务器连接失败，请检查" + str(e))
|
||
# temp_dict = temp_dict
|
||
temp_list = list(temp_dict.items())
|
||
for i in range(len(temp_list)):
|
||
# 寻找节点上的变量
|
||
var = self.client.get_node(temp_list[i][0])
|
||
# var.set_value(ua.Variant(1.234, ua.VariantType.Float))
|
||
# 通过set_value写值
|
||
var.set_value(ua.Variant(temp_list[i][1], ua.VariantType.Double))
|
||
# print("%s 已写入" % var.get_value())
|
||
self.client.disconnect()
|
||
|
||
# 断开连接
|
||
# def disconnect(self):
|
||
# self.client.disconnect()
|