Read SICK FlexiSoft GMOD gateway data using pymodbus

GMOD.py

# See https://cdn.sick.com/media/docs/6/86/086/Operating_instructions_Flexi_Soft_Gateways_in_the_Safety_Designer_Configuration_software_de_IM0081086.PDF
# Page 36

from pymodbus.client import ModbusTcpClient as ModbusClient

IP = "192.168.255.3"
PORT = 502
ADDRESS = 1100
REGISTERS = 25
SLAVE_ID = 1

client = ModbusClient(IP, port=PORT)
client.connect()

# Address must be subtracted by 1
response = client.read_holding_registers(ADDRESS - 1, REGISTERS, SLAVE_ID)

# Split 16bit ints into 8bit and swap them in order to resable the exact layout shown in the FlexiSoft Designer
data = sum(
    [[(register & 0xFF), (register >> 8 & 0xFF)] for register in response.registers], []
)

for n, register in enumerate(data,1):
    print(f"{n} {register:08b}")

client.close()