wn/opcua-with-python
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publish json data

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This commit is contained in:
Wolfgang Hottgenroth
2022-02-04 23:03:11 +01:00
parent 0e5a22a481
commit 04b48f75a3
3 changed files with 13 additions and 4 deletions
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10
opcua2mqtt/DataObject.py
View File

@ -1,5 +1,5 @@
import re
import json
class InvalidDataObjectException(Exception):
def __init__(self, message):
@ -21,4 +21,10 @@ class DataObject(object):
return self.serverName + '/' + str(self.nameSpaceIndex) + '/' + self.variableName
def getPayload(self):
return self.value
payload = {
"serverName": self.serverName,
"nameSpaceIndex": self.nameSpaceIndex,
"variableName": self.variableName,
"value": self.value
}
return json.dumps(payload)

3
opcua2mqtt/OpcUaRequester.py
View File

@ -16,6 +16,7 @@ class OpcUaRequester(threading.Thread):
self.url = self.config['url']
self.nodes = self.config['nodes']
self.delay = self.config['delay']
self.timeout = self.config['timeout']
# consider this flag in the localLoop
self.killBill = False
@ -25,7 +26,7 @@ class OpcUaRequester(threading.Thread):
async def opcUaRequesterInnerLoop(self):
while not self.killBill:
try:
async with Client(url=self.url, timeout=10.0) as client:
async with Client(url=self.url, timeout=self.timeout) as client:
for nodeSpec in self.nodes:
try:
logger.debug(f"Trying {self.name} {self.url} ns={nodeSpec['ns']};{nodeSpec['n']}")

4
opcua2mqtt/config.json
View File

@ -10,11 +10,12 @@
"url": "opc.tcp://172.16.3.60:4840",
"name": "apl",
"delay": 1.0,
"timeout": 1.0,
"nodes": [
{ "ns": 0, "n": "i=345", "d": "pv" },
{ "ns": 0, "n": "i=348", "d": "sv" },
{ "ns": 0, "n": "i=351", "d": "tv" },
{ "ns": 0, "n": "i=35400", "d": "qv" }
{ "ns": 0, "n": "i=354", "d": "qv" }
]
},
{
@ -22,6 +23,7 @@
"url": "opc.tcp://192.168.254.5:4863",
"name": "sh",
"delay": 1.0,
"timeout": 10.0,
"nodes": [
{ "ns": 1, "n": "s=A201CD124/MOT_01.AV_Out#Value", "d": "A201CD124" },
{ "ns": 1, "n": "s=A201CJ003/PID_01.PV_Out#Value", "d": "A201CJ003" },