class EIPFunctions:
def __init__(self):
# initialize a thread safe queue
# load queue with a single plc obj
self.plc = ClxDriver()
self.mutex = Lock()
def is_connected(self):
with self.mutex:
return self.plc.is_connected()
def connect_plc(self, ip):
with self.mutex:
self.plc.open(ip)
return self.plc.is_connected()
def disconnect_plc(self):
with self.mutex:
if self.plc.is_connected():
self.plc.close()
def read_tag(self, tag_name):
with self.mutex:
return self.plc.read_tag(tag_name)[0]
def write_tag(self, tag_name, tag_value, tag_type):
"""
:param tag_name: tag name, or an array of tuple containing (tag name, value, data type)
:param tag_value: the value to write or none if tag is an array of tuple or a tuple
:param tag_type: the type of the tag to write or none if tag is an array of tuple or a tuple
:return: None is returned in case of error otherwise the tag list is returned
The type accepted are:
- BOOL
- SINT
- INT'
- DINT
- REAL
- LINT
- BYTE
- WORD
- DWORD
- LWORD
"""
with self.mutex:
return self.plc.write_tag(tag_name, tag_value, tag_type)
def read_tag_string(self, tag_name):
with self.mutex:
return self.plc.read_string(tag_name)
def write_tag_string(self, tag_name, tag_value):
with self.mutex:
return self.plc.write_string(tag_name, tag_value)
def read_tag_array(self, tag_name, count):
with self.mutex:
return self.plc.read_array(tag_name, count)
def write_tag_array(self, tag_name, tag_array, tag_type):
with self.mutex:
self.plc.write_array(tag_name, tag_array, tag_type)
# always return true; pycomm is not telling us if we succeed or not
return True
print c['port']
print c.__version__
if c.open('192.168.0.167', 3):
try:
# r_array = c.read_array("F20_CreamReceoption.Tickets",2)
# print r_array
# for tag in r_array:
# print (tag)
# x = c.read_tag(['Python_Teste_01'])
# print x[0][1]
# print(c.read_tag(['F20_CreamReceoption']))
# print(c.read_tag('Python_Teste_03'))
# print(c.read_tag(['Python_Teste_04']))
print(c.read_string('F20_CreamReceoption.Tickets[0].StartTime'))
# print(c.read_tag(['parts', 'ControlWord', 'Counts']))
# print(c.write_string('Python_Teste_06', 'Flex Automacao'))
# print(c.write_tag(('TankSelectedToExpedition', 26, 'INT')))
# print(c.write_tag([('Counts', 26, 'INT')]))
# print(c.write_tag([('Counts', -26, 'INT'), ('ControlWord', -30, 'DINT'), ('parts', 31, 'DINT')]))
c.close()
except Exception as e:
c.close()
print e
pass
# To read an array
# r_array = c.read_array("F20_CreamReceoption", 1750)
# for tag in r_array:
# print (tag)
