HOST_ADDR = "192.168.8.20"
HOST_PORT = 502
class ModbusClient(ModbusClient):
def reg_read(self, address, reg=0x0000, length=0x01):
if address is not None:
self.unit_id(address)
return self.read_holding_registers(reg, length * 2)
@staticmethod
def reg_dump(temp=None):
if temp is not None:
print("Temperature: {:.1f}".format(float(temp[0]/10)))
print("Humidity: {:10.1%}".format(float(temp[1] / 1000)))
if __name__ == '__main__':
c = ModbusClient(host=HOST_ADDR, port=HOST_PORT, auto_open=True, auto_close=True, timeout=1)
while True:
if c.last_error() > 0:
c.close()
c = ModbusClient(host=HOST_ADDR, port=HOST_PORT, auto_open=True, auto_close=True, timeout=1)
c.reg_dump(c.reg_read(address=0x01))
