def get_point(self, point_name):
register = self.get_register_by_name(point_name)
client = SyncModbusClient(self.ip_address, port=self.port)
try:
result = register.get_state(client)
except (ConnectionException, ModbusIOException, ModbusInterfaceException):
result = None
finally:
client.close()
return result
def set_point_sync(self, point_name, value):
register = self.point_map[point_name]
client = SyncModbusClient(self.ip_address, port=self.port)
result = None
try:
result = register.set_state_sync(client, value)
except (ConnectionException, ModbusIOException,
ModbusInterfaceException):
result = None
finally:
client.close()
return result
def scrape_all(self):
result_dict = {}
try:
client = SyncModbusClient(self.ip_address, port=self.port)
result_dict.update(self.scrape_byte_registers(client, True))
result_dict.update(self.scrape_byte_registers(client, False))
result_dict.update(self.scrape_bit_registers(client, True))
result_dict.update(self.scrape_bit_registers(client, False))
except (ConnectionException, ModbusIOException,
ModbusInterfaceException):
print("ERROR: Failed to scrape device at " + self.ip_address +
":" + str(self.port) + " " + "ID: " + str(self.slave_id))
return None
finally:
client.close()
return result_dict
def modbus_client(address, port):
with socket_lock():
with closing(SyncModbusClient(address, port)) as client:
yield client