def _setup(self):
cryptogen = SystemRandom()
while True:
bits_value = [
bool(cryptogen.randrange(2)) for indx in range(self.bit_num)
]
words_value = [
cryptogen.randrange(10) for _ in range(self.word_num)
]
try:
DataBank.set_bits(self.bit_adr, bits_value)
DataBank.set_words(self.word_adr, words_value)
except Exception as err:
raise ServerError('Error with writing', err)
def main():
""" Main method to run the pyModbusTCP server for the test modbus endpoint.
"""
try:
print('modbus main start')
# Set holding register data to their address.
# Set coils to address % 3 == 0.
for i in range(0x4000):
print('Setting word {} to {}'.format(i, i))
print('Setting bits {} to {}'.format(i, i % 3 == 0))
DataBank.set_words(i, [i])
DataBank.set_bits(i, [i % 3 == 0])
server = ModbusServer(host='', port=1502, no_block=True)
server.start()
print('started modbus server')
global STOP_SERVER
while not STOP_SERVER:
time.sleep(.01)
server.stop()
print('stopped modbus server')
except Exception:
traceback.print_exc()
print("Setting PLC port to DOWN: ", end="", flush=True)
cmds = [
"config switch physical-port",
"edit port3",
"set status down",
"end"
]
exec_ssh_cmds(cmds)
print(f"[{Fore.GREEN}DONE{Style.RESET_ALL}]")
# Set IP to PLC's IP
print("Setting local IP to PLC IP: ", end="", flush=True)
set_ip(interface, targetaddr, targetsubnet, targetgateway)
print(f"[{Fore.GREEN}DONE{Style.RESET_ALL}]")
print("Waiting for IP to kick in: ", end="", flush=True)
time.sleep(2)
print(f"[{Fore.GREEN}DONE{Style.RESET_ALL}]")
# Run modbus server
print("Starting modbus server: ", end="", flush=True)
server = ModbusServer(host="0.0.0.0", port=502)
DataBank.set_bits(0, [1, 1, 1, 1, 1, 1, 1, 1, 1])
DataBank.set_words(0, [2**15-1, 2**15-1, 2**15-1, 2**15-1,
2**15-1, 2**15-1, 2**15-1, 2**15-1, 2**15-1, 2**15-1])
print(f"[{Fore.GREEN}DONE{Style.RESET_ALL}]")
print("Press Ctrl+C to safely stop server")
server.start()
import random
SERVER_HOST_IP = "localhost"
SERVER_PORT = 502
# Create an instance of ModbusServer
server = ModbusServer(SERVER_HOST_IP, SERVER_PORT, no_block=True)
if __name__ == '__main__':
try:
print("Starting server...")
server.start()
print("Server online")
# Server enable
DataBank.set_bits(9901, [1])
# Sample Rate (Hz)
DataBank.set_words(39901, [2])
# Fake sensor configuration (LANE 00)
# Lane_Enable
DataBank.set_bits(0, [1])
# Sensor value
DataBank.set_words(30001, [0])
# Raw voltage value (0.1 mV)
DataBank.set_words(30002, [0])
# Sensor type
DataBank.set_words(40001, [0])
# Generate random data
def write_bit(index: int, value: int):
DataBank.set_bits(index, [value])
log('Wrote %s to index %s' % (value, index + 10001))