plcSimulator.py
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import os
import sys
import json
DEBUG_FILE = False
PACKAGE_PARENT = '..'
SCRIPT_DIR = os.path.dirname(os.path.realpath(os.path.join(os.getcwd(), os.path.expanduser(__file__))))
sys.path.append(os.path.normpath(os.path.join(SCRIPT_DIR, PACKAGE_PARENT)))
#(EP renamed) from utils.Device import Device
from utils.DeviceSim import DeviceSim
from utils.StatusManager import StatusManager
#(EP renamed) class PLCSimulator(Device, StatusManager):
class PLCSimulator(DeviceSim, StatusManager):
status = {
"name": "STATUS", "from": "Beckhoff", "version_firmware": "20170809", "site": "OSM-Mexico",
"date": "2017-03-03T13:45:00",
"device": [{"name": "WXT520", "type": "meteo", "serial_number": "14656423", "valid": "yes",
"values": [
{"name": "OutsideTemp", "value": 12.12, "unit": "Celcius", "comment": ""},
{"name": "OutsideHumidity", "value": 64.1, "unit": "percent", "comment": ""},
{"name": "Pressure", "value": 769.2, "unit": "mbar", "comment": "At site elevation"},
{"name": "RainRate", "value": 0.0, "unit": "mm/h", "comment": ""},
{"name": "WindSpeed", "value": 3.1, "unit": "m/s", "comment": ""},
{"name": "WindDir", "value": 202.3, "unit": "deg", "comment": "(N=0, E=90)"},
{"name": "DewPoint", "value": 8.3, "unit": "deg", "comment": ""}
]
},
{"name": "DRD11", "type": "meteo", "serial_number": "RET6789", "valid": "yes",
"values": [
{"name": "analog", "value": 2.345, "unit": "V", "comment": "3V=Dry <2.5V=Rain"},
{"name": "digital", "value": 1, "unit": "bool", "comment": "1=Dry 0=Rain"}
]
},
{"name": "VantagePro", "type": "meteo", "serial_number": "ERTRY2344324", "valid": "no",
"values": [
{"name": "OutsideTemp", "value": 12.45, "unit": "Celcius", "comment": ""},
{"name": "InsideTemp", "value": 20.28, "unit": "Celcius", "comment": ""},
{"name": "OutsideHumidity", "value": 65.3, "unit": "percent", "comment": ""},
{"name": "InsideHumidity", "value": 45.6, "unit": "percent", "comment": ""},
{"name": "Pressure", "value": 768.7, "unit": "mbar", "comment": "At site elevation"},
{"name": "RainRate", "value": 0.0, "unit": "mm/h", "comment": ""},
{"name": "WindSpeed", "value": 2.8, "unit": "m/s", "comment": ""},
{"name": "WindDir", "value": 207.0, "unit": "deg", "comment": "(N=0, E=90)"},
{"name": "WindDirCardinal", "value": "SW", "unit": "string", "comment": ""},
{"name": "DewPoint", "value": 8.5, "unit": "deg", "comment": ""}
]
},
{"name": "MLX90614-1", "type": "meteo", "serial_number": "Unknown", "valid": "yes",
"values": [
{"name": "SensorTemperature", "value": 23.56, "unit": "Celcius", "comment": ""},
{"name": "SkyTemperature", "value": -15.67, "unit": "Celcius",
"comment": "Clear<-10 VeryCloudy>4"}
]
},
{"name": "LAMP_FLAT_CAGIRE", "type": "calib", "serial_number": "REF_3434", "valid": "yes",
"values": [
{"name": "status", "value": "on", "unit": "string", "comment": "on or off"},
{"name": "current", "value": 0.234, "unit": "Ampere", "comment": ""}
]
},
{"name": "LAMP FLAT CAGIRE", "type": "calib", "serial_number": "REF_3434", "valid": "yes",
"values": [
{"name": "status", "value": "on", "unit": "string", "comment": "on or off"},
{"name": "current", "value": 0.234, "unit": "Ampere", "comment": ""}
]
}
]
}
list = {"name": "LIST", "from": "Beckhoff", "version_firmware": "20170809", "site": "OSM-Mexico",
"date": "2017-03-03T13:42:46",
"command": [
{"name": "LIST", "type": "",
"parameters": ""
},
{"name": "SATUS", "type": "",
"parameters": ""
},
{"name": "LAMP_FLAT_CAGIRE", "type": "calib",
"parameters": [
{"name": "value", "unit": "string", "comment": "on or off", "default": ""},
{"name": "current", "unit": "Ampere", "comment": "", "default": "0.345"}
]
}
]
}
def __init__(self, argv):
super().__init__(argv)
# Listen to its own ip and port (the PLC's)
self.setDevice("PLC")
self.setStatusManager("plcSimulator", argv)
def plcPrint(self, string: str):
if DEBUG_FILE:
print("PLCSimulator : " + string)
def updateStatus(self, i: int):
for dic in self.sims:
# ex: dic is like "plcSimulator" : {"device_name":"VantagePro", "value_name":"RainRate", "value":12.0}
if (int(dic["time"]) == i):
print(dic)
change = dic[self.status_name] # ex: {"device_name":"VantagePro", "value_name":"RainRate", "value":12.0}
device_name = change["device_name"] # ex: VantagePro
devices = self.status["device"]
for device in devices:
if device["name"] == device_name:
values = device["values"]
# ex: for VantagePro
# values =
# {"name": "OutsideTemp", "value": 12.45, "unit": "Celcius", "comment": ""},
# {"name": "InsideTemp", "value": 20.28, "unit": "Celcius", "comment": ""},
#...
for value in values:
if value["name"] == change["value_name"]:
# This will indirectly update self.status
value["value"] = change["value"]
return 0
def handleConnections(self):
print("number of connexions to handle: "+str(len(self.connections)))
for conn in self.connections:
print("current connexion: ")
print(conn)
data = self.readBytes(1024, conn)
answer = "["
count = False
#if data != "" and self.isError(data) is False:
if data != "" and not self.isError(data):
json_array = json.loads(data)
command_list = json_array["command"]
for command in command_list:
if command["name"] == "STATUS":
if count:
answer += ','
answer += json.dumps(self.status)
count = True
elif command["name"] == "LIST":
if count:
answer += ','
answer += json.dumps(self.status)
count = True
else:
print("command received by PLC simulator : [>>> "+ str(command["name"]) + " <<<] unknown")
answer += ']'
if len(answer) > 0 and answer != "[]":
self.sendMessage(answer, conn)
return (0)
def loop(self):
i = 0
if (self.ended == 0):
self.plcPrint("No entry for PLC found in config file : " + self.config_file)
return False
while (True):
print("\n\n\nIteration "+str(i)+" :")
self.updateStatus(i)
if (self.isConnected()):
self.handleConnections()
i += 1
if (i > self.ended):
return (0)
return True
def run(self):
if DEBUG_FILE:
print("PLC simulator running...")
if not self.parse(): return False
self.configSocket()
return self.loop()
#return (0)
if __name__ == "__main__":
sim = PLCSimulator(sys.argv)
sim.run()