def write_registers(self, start_register_address, write_values):
""" Modbus command : Write data to multiple registers (function code = 16)
Argument :
start_register_address (int16) : Start address where to write a data
write_values (int16) : Write data(s)
"""
# Enable byte system of modbus to be signed-value type
if self.signed_type == True:
conf.SIGNED_VALUES = True
else:
conf.SIGNED_VALUES = False
# Generate modbus TCP message
try:
message = modbus_tcp.write_multiple_registers(
slave_id=self.device_id,
starting_address=start_register_address,
values=write_values)
except Exception as e:
print("Error during generate modbus message.")
print(
"\tMaybe, write value is less than 0 as signed integer and .signed_type is set to 'False'."
)
# Send message via TCP socket
try:
self._connect()
response = modbus_tcp.send_message(message, self.tcp_socket)
print("response={}".format(response))
self._disconnect()
except Exception as e:
print("Error during send modbus message.")
print(e)
def write_holding_registers(self, starting_address, values):
with self.__lock:
message = tcp.write_multiple_registers(
slave_id=1,
starting_address=starting_address - 1,
values=values)
self.__send_modbus_message(message)
def write(self):
message = tcp.write_multiple_registers(slave_id=1, starting_address=0, values=self._output_regs)
# time.sleep(.5)
while True:
try:
print(self._output_regs)
print(message)
try:
response = tcp.send_message(message, self.client)
except ValueError as ve:
print(response)
break
except OSError as e:
print('No he poodido leer. Error {e}')
while True:
try:
self.client.connect((self.ip, self.port))
print('Socket conectado')
break
except OSError as e:
print('No he poodido conectar. Error {e}')
time.sleep(5)
continue
os.system('clear')
print(Text.from_markup(str(self)))
def write_multiple_reg(self, starting_addr, values, slave_id=None):
slv_id = self.default_slave_id if slave_id is None else slave_id
for starting_idx, ending_idx in self.get_chunk_indices(values, 123):
request_adu = tcp.write_multiple_registers(
slv_id, starting_addr + starting_idx,
values[starting_idx:ending_idx])
tcp.send_message(request_adu, self.socket)
def gateway_config_write_read(self,add, value):
config_id = 4
message = tcp.write_multiple_registers(slave_id=config_id, starting_address=add, values=[value])
response = tcp.send_message(message, self.sock)
time.sleep(0.1)
message = tcp.read_holding_registers(config_id, add, 1)
response = tcp.send_message(message, self.sock)
print("..")
if response[0] != value:
raise ValueError("Value not writen!")
def write_hr(self, new_value):
if self.bit is not None:
message = tcp.read_holding_registers(slave_id=self.slave_id,
starting_address=self.addr,
quantity=1)
response = self.server.send_message(message)
current_value = response[0]
if new_value:
new_value = current_value | 1 << self.bit
else:
new_value = current_value & ~(1 << self.bit)
message = tcp.write_multiple_registers(slave_id=self.slave_id,
starting_address=self.addr,
values=[int(new_value)])
response = self.server.send_message(message)
return response
def write_registers(self, address, values=None):
"""
Low level register access.
Performs a modbus write registers request to the MAQ20
:param address: starting address.
:param values: list(int) [-32767, 32767] or a str
:return: modbus response.
"""
ints = []
if type(values) is str:
for c in values:
ints.append(ord(c))
else:
ints = [signed16_to_unsigned16(x) for x in values]
if MODBUS_BACKEND == pymodbus:
return self._client.write_registers(address, ints)
if MODBUS_BACKEND == UMODBUS:
message = tcp.write_multiple_registers(slave_id=0,
starting_address=address,
values=ints)
return tcp.send_message(message, self._sock)
def writeWords(self,address, values):
message = tcp.write_multiple_registers(self.slaveNbr, address, values)
response = self.__doRequest(message)
return response
async def write(self, client):
message = tcp.write_multiple_registers(slave_id=1, starting_address=0, values=self._output_regs)
response = tcp.send_message(message, client)