pyModbusTCP Information

[MAL]

After spending a few hours looking for this information I  figure I might not be the only one wishing more information was out there.

# Simple code to read the first 100 MI

from pyModbusTCP.client import ModbusClient
from pyModbusTCP import utils

def read_registers():
    host_ip = 'x.x.x.x'		# Change to your device IP
    port_number = 502		# Change to your device Port
    c = ModbusClient(
    host=host_ip,
    port=port_number,
    unit_id=1,
    auto_open=True,
    timeout='2'			# Increase timeout if needed
    )

    register = 0x0000		# Change acording to the list below the code block
    data = c.read_holding_registers(register,100)	# change 100 to how ever many registers you wish to read
    print(data)

read_registers()

# Coils
#------------------------
# 0x0000 mb
# 0x3000 xb
# 0x4000 o
# 0x5000 sb
# 0x6000 i
# 0x7000 t
# 0x8000 c

# Registers ( any long or double word uses 2 registers  when pulling data )
#------------------------
# 0x0000 mi
# 0x3000 xi
# 0x9000 si
# 0x5000 xl
# 0x6000 xdw
# 0x7000 ml
# 0xA000 sl
# 0x8000 mdw
# 0xB000 sdw
# 0xC000 timer preset
# 0xD000 timer current
# 0x4000 mf


Additional information on Long and Double words:  The first register is 0 through its bit register (ML is 65,536).  Any number after this is returned to 0 and incrementing the second register by 1.

Example1: 70,000  =      4,464  +  (1 = 65,536 * 1)
Example2: 170,000 =  38,928 +  (2 = 65,536 * 2 = 131,072 + 38,928 = 170,000)