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 thread_poll(self):
startaddr = self.input_startaddr.value()
endaddr = self.input_endaddr.value()
while self.swjk < 10:
if self.swjk > 1:
print('break ok')
break
else:
print('polling start')
holdingRegisters_list = []
for addrlist in range(startaddr, endaddr + 1):
try:
if self.fncode == 1:
msg_adu = tcp.read_coils(1, addrlist, 1)
holdingRegisters = tcp.send_message(
msg_adu, self.sock)
elif self.fncode == 10001:
msg_adu = tcp.read_discrete_inputs(1, addrlist, 1)
holdingRegisters = tcp.send_message(
msg_adu, self.sock)
elif self.fncode == 40001:
msg_adu = tcp.read_holding_registers(
1, addrlist, 1)
holdingRegisters = tcp.send_message(
msg_adu, self.sock)
elif self.fncode == 30001:
msg_adu = tcp.read_input_registers(1, addrlist, 1)
holdingRegisters = tcp.send_message(
msg_adu, self.sock)
holdingRegisters_list.append(holdingRegisters[0])
except AttributeError:
print('Register Addr Over')
holdingRegisters_list.append('None')
print("Register " + str(addrlist) + " poll.")
print(holdingRegisters_list)
items_list = []
for registersData in holdingRegisters_list:
item_holdingRegisters = QTableWidgetItem()
item_holdingRegisters.setText(str(registersData))
items_list.append(item_holdingRegisters)
for item_num in range(0, len(items_list)):
self.swjTableSignal.emit(item_num, 2, items_list[item_num])
time.sleep(1)
def write_bit(self, slave_id, address, bit,value):
message = tcp.read_holding_registers(slave_id, address, 1)
current_value = tcp.send_message(message, self.sock)[0]
new_value = set_bit(current_value,bit,value)
message = tcp.write_single_register(slave_id, address,new_value)
response = tcp.send_message(message, self.sock)
return response
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 read_discrete_inputs(self, start_discrete_address, number_of_inputs):
""" Modbus command : Read discrete input(s) (function code = 02)
@Argument :
start_discrete_address (int16) : Start discrete input address where to read a input data
number_of_inputs (int) : number of discrete input(s) to read
@Return :
response : Discrete input(s) data
"""
response = None
# Generate modbus TCP message
try:
message = modbus_tcp.read_discrete_inputs(
slave_id=self.device_id,
starting_address=start_discrete_address,
quantity=number_of_inputs)
except Exception as e:
print("Error during generate modbus message.")
# 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)
return response
def read_coils(self, start_coil_address, number_of_coils):
""" Modbus command : Read coil data(s) (function code = 01)
@Argument :
start_coil_address (int16) : Start coil address where to read a coil data
number_of_coils (int) : number of coil(s) to read
@Return :
response : Coil data (Byte)
The coils in the response message are packed as one coil per bit of the
data field. Status is indicated as 1= ON and 0= OFF.
"""
response = None
# Generate modbus TCP message
try:
message = modbus_tcp.read_coils(
slave_id=self.device_id,
starting_address=start_coil_address,
quantity=number_of_coils)
except Exception as e:
print("Error during generate modbus message.")
# 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)
return response
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(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_coil(self, coil_address, write_value):
""" Modbus command : write single coil data (function code = 05)
@Argument :
coil_address (int16) : Coil address where to write a coil data
write_value (int) : write value
"""
# Generate modbus TCP message
try:
message = modbus_tcp.write_single_coil(slave_id=self.device_id,
address=coil_address,
value=write_value)
except Exception as e:
print("Error during generate modbus message.")
# 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 updateRecord(currentScore, ip):
global lastrowid, ind_serial
sock_modbus = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
data_base = sqlite3.connect('score.db')
try:
sock_modbus.connect(('10.11.13.' + ip, 502))
str_message = tcp.read_input_registers(slave_id=1,
starting_address=102,
quantity=1)
list_response = tcp.send_message(str_message, sock_modbus)
finally:
sock_modbus.close()
if list_response[0] != currentScore:
tmpScore = list_response[0]
try:
tmp_cur = data_base.cursor()
tmp_sql = (
'UPDATE game SET score=\'{0}\' WHERE id_game=\'{1}\';'.format(
tmpScore, lastrowid))
tmp_cur.execute(tmp_sql)
tmp_cur.close()
data_base.commit()
finally:
data_base.close()
return tmpScore
return currentScore
def __doRequest(self,message):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((self.ipAddr, self.port))
response = tcp.send_message(message, sock)
sock.close()
return response
def openDoor(ip):
global Threat_Flags
try: #open door
if not Threat_Flags[0]:
try:
sock_modbus = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock_modbus.connect(('10.11.13.' + ip, 502))
str_message = tcp.write_single_coil(slave_id=1,
address=100,
value=1)
list_response = tcp.send_message(str_message, sock_modbus)
except socket.error as e:
print('except')
QMessageBox(QMessageBox.Critical, "Error:\n", str(e)).exec()
else:
pygame.mixer.music.load("fb.mp3")
pygame.mixer.music.play(5)
createRecord()
GameThread(ip).start()
setDoor(0)
SleepThread(10, setDoor, 1).start()
finally:
sock_modbus.close()
except: #open door
answerMessage = '{} >> unenable to start game'.format(
time.strftime('%H:%M:%S|%y.%m.%d', time.localtime()))
logging.warning(answerMessage)
else: #open door
answerMessage = '{} >> start game'.format(
time.strftime('%H:%M:%S|%y.%m.%d', time.localtime()))
logging.info(answerMessage)
def write_coils(self, coil_start_address, write_values):
""" Modbus command : write multiple coils data (function code = 15)
@Argument :
coil_start_address (int16) : Coil start address where to write a set of coils data
write_values (int) : write value(s) (list-type)
"""
# Generate modbus TCP message
try:
message = modbus_tcp.write_multiple_coils(
slave_id=self.device_id,
starting_address=coil_start_address,
values=write_values)
except Exception as e:
print("Error during generate modbus message.")
# 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 test_response_on_multi_bit_value_read_requests(sock, function):
""" Validate response of a succesful Read Holding Registers or Read
Input Registers request.
"""
slave_id, starting_address, quantity = (1, 0, 10)
req_adu = function(slave_id, starting_address, quantity)
assert tcp.send_message(req_adu, sock) == [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]
def test_response_on_single_bit_value_read_requests(sock, function):
""" Validate response of a succesful Read Coils or Read Discrete Inputs
request.
"""
slave_id, starting_address, quantity = (1, 0, 10)
req_adu = function(slave_id, starting_address, quantity)
assert tcp.send_message(req_adu, sock) == [0, 1, 0, 1, 0, 1, 0, 1, 0, 1]
def test_response_single_value_write_request(sock, function, value):
""" Validate responde of succesful Read Single Coil and Read Single
Register request.
"""
slave_id, starting_address, value = (1, 0, value)
req_adu = function(slave_id, starting_address, value)
assert tcp.send_message(req_adu, sock) == value
def test_response_on_single_bit_value_read_requests(sock, function):
""" Validate response of a succesful Read Coils or Read Discrete Inputs
request.
"""
slave_id, starting_address, quantity = (1, 0, 10)
req_adu = function(slave_id, starting_address, quantity)
assert tcp.send_message(req_adu, sock) == [0, 1, 0, 1, 0, 1, 0, 1, 0, 1]
def test_response_single_value_write_request(sock, function, value):
""" Validate responde of succesful Read Single Coil and Read Single
Register request.
"""
slave_id, starting_address, value = (1, 0, value)
req_adu = function(slave_id, starting_address, value)
assert tcp.send_message(req_adu, sock) == value
def test_response_on_multi_bit_value_read_requests(sock, function):
""" Validate response of a succesful Read Holding Registers or Read
Input Registers request.
"""
slave_id, starting_address, quantity = (1, 0, 10)
req_adu = function(slave_id, starting_address, quantity)
assert tcp.send_message(req_adu, sock) ==\
[0, -1, -2, -3, -4, -5, -6, -7, -8, -9]
def send_message():
message = tcp.read_holding_registers(slave_id=1,
starting_address=0,
quantity=4)
try:
response = tcp.send_message(message, sock)
return response
except ValueError:
print("Whoops... WTS seems to be not responding")
def test_response_multi_value_write_request(sock, function, values):
""" Validate response of succesful Write Multiple Coils and Write Multiple
Registers request.
Both requests write 2 values, starting address is 0.
"""
slave_id, starting_address = (1, 0)
req_adu = function(slave_id, starting_address, values)
assert tcp.send_message(req_adu, sock) == 2
def test_response_multi_value_write_request(sock, function, values):
""" Validate response of succesful Write Multiple Coils and Write Multiple
Registers request.
Both requests write 2 values, starting address is 0.
"""
slave_id, starting_address = (1, 0)
req_adu = function(slave_id, starting_address, values)
assert tcp.send_message(req_adu, sock) == 2
def set_discharge(self, discharge=3000):
""" Set discharge value."""
ret_status = True
message = write_passive_register(slave_id=self.slave_id,
address=self.DISCHARGE,
value=discharge)
try:
response = tcp.send_message(message, self.modbus_tcp)
except:
ret_status = False
response = 0
return ret_status, response
def set_auto(self):
""" Switch inverter to AUTO."""
ret_status = True
message = write_passive_register(slave_id=self.slave_id,
address=self.AUTO,
value=0)
try:
response = tcp.send_message(message, self.modbus_tcp)
except:
ret_status = False
response = 0
return ret_status, response
def set_standby(self):
""" Switch inverter to STANDBY."""
ret_status = True
message = write_passive_register(slave_id=self.slave_id,
address=self.STANDBY,
value=self.STANDBY_VAL)
try:
response = tcp.send_message(message, self.modbus_tcp)
except:
ret_status = False
response = 0
return ret_status, response
def get_battery_percentage(self):
""" Return the current charge percentage of the batteries."""
ret_status = True
message = tcp.read_holding_registers(slave_id=self.slave_id,
starting_address=self.BATTPCT,
quantity=1)
try:
response = tcp.send_message(message, self.modbus_tcp)
except:
ret_status = False
response = [-1]
return ret_status, response[0]
def get_inverter_state(self):
""" Return the inverter state."""
ret_status = True
message = tcp.read_holding_registers(slave_id=self.slave_id,
starting_address=self.ME_STATE,
quantity=1)
try:
response = tcp.send_message(message, self.modbus_tcp)
except:
ret_status = False
response = [-1]
return ret_status, response[0], self.INV_STATES[response[0]]
def read_input(self):
""" Read the inverter's input registers."""
ret_status = True
message = tcp.read_input_registers(slave_id=self.slave_id,
starting_address=self.ME_INPUT,
quantity=self.NUM_INPUT)
try:
response = tcp.send_message(message, self.modbus_tcp)
except:
ret_status = False
response = 0
return ret_status, response
def read_holding(self):
""" Read all the holding registers from inverter."""
ret_status = True
message = tcp.read_holding_registers(slave_id=self.slave_id,
starting_address=self.ME_HOLDING,
quantity=self.NUM_HOLDING)
try:
response = tcp.send_message(message, self.modbus_tcp)
except:
ret_status = False
response = 0
return ret_status, response
def read_multiple_reg(self, starting_addr, count, slave_id=None):
slv_id = self.default_slave_id if slave_id is None else slave_id
response = [None] * count
for starting_idx, ending_idx in self.get_chunk_indices(
range(count), 125):
request_adu = tcp.read_holding_registers(
slv_id, starting_addr + starting_idx,
ending_idx - starting_idx)
response[starting_idx:ending_idx] = tcp.send_message(
request_adu, self.socket)
return response
def read(self, sock, slave_id=0):
"""
Attempt to read a raw value from the register.
This function has debugging logging that will print all bytes returned
from the server.
"""
# NOTE: Addresses are 0 indexed, but the documented registers are 1 indexed.
msg = tcp.read_holding_registers(slave_id, self.register - 1, 1)
resp = tcp.send_message(msg, sock)
# Extract the single value from the results
val = resp[0]
print("{} ({}): {}".format(self.name, self.register, val))
return val
def get_data(ip_address, port=502):
"""get_data is excpected to return a unique value."""
try:
# Start of your code (example below)
conf.SIGNED_VALUES = False
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((ip_address, port))
message = tcp.read_holding_registers(slave_id=1,
starting_address=0,
quantity=1)
response = tcp.send_message(message, sock)
sock.close()
return response[0]
# End of your code
except ConnectionRefusedError as e:
raise GetDataException(e)
def send_message(self, message):
self.mutex.lock()
response = None
if not self.connected:
self.mutex.unlock()
return response
try:
response = tcp.send_message(message, self.sock)
except Exception as ex:
logger.error("Error sending message to server. {}".format(str(ex)))
if "timed out" in str(ex):
self.mutex.unlock()
return None
self.connected = False
self.mutex.unlock()
return response
def __send_modbus_message(self, adu):
with self.__lock:
while True:
try:
result = tcp.send_message(adu, self.__modbus_socket)
return result
except socket.timeout as ex:
rospy.logwarn('Modbus socket timed out. Reconnecting.')
self.connect()
except socket.error as ex:
if ex.errno in {errno.EPIPE, errno.ETIMEDOUT}:
rospy.logwarn_throttle(
1, 'Receive modbus data failed (Error: %s). '
'Reconnecting.' % (ex, ))
self.connect()
else:
raise
#!/usr/bin/env python
# scripts/examples/simple_client.py
import socket
from umodbus import conf
from umodbus.client import tcp
# Enable values to be signed (default is False).
conf.SIGNED_VALUES = True
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect(('localhost', 502))
# Returns a message or Application Data Unit (ADU) specific for doing
# Modbus TCP/IP.
message = tcp.write_multiple_coils(slave_id=1, address=1, values=[1, 0, 1, 1])
# Response depends on Modbus function code. This particular returns the
# amount of coils written, in this case it isr3.
response = tcp.send_message(message, sock)
sock.close()