rmc75e

EtherNet/IP explicit messaging client for Delta RMC75E motion controllers.

Provides register read/write access via the RMC's Register Map Object (class 0xC0), using service codes 0x4B/0x4C with LSB-first byte order. Equivalent to RMCLink's readFloat/writeFloat functionality.

Built on top of EIPScanner with Python bindings via pybind11.

Installation

From wheel

pip install rmc75e

From source

Linux

./setup_project_linux.sh

Windows

Run from Developer PowerShell for VS:

.\setup_project_windows.ps1

Quick Start

from rmc75e import RMC75EClient

client = RMC75EClient("192.168.17.200")
client.connect()

# Read float registers (file 57, element 30, count 2)
values = client.read_float(57, 30, 2)
print(values)  # [1.0, 2.5]

# Write float register
client.write_float(57, 33, [3.14])

# Read integer registers
values = client.read_int32(57, 32, 1)

client.disconnect()

API

RMC75EClient(plc_address, port=44818)

Create a new client for an RMC75E controller.

• connect() - Open an EtherNet/IP session
• disconnect() - Close the session
• is_connected() - Check connection status
• read_float(file, element, count) - Read 32-bit float registers
• write_float(file, element, values) - Write 32-bit float registers
• read_int32(file, element, count) - Read 32-bit integer registers
• write_int32(file, element, values) - Write 32-bit integer registers
• send_raw_request(service, data) - Send a raw CIP request

Requirements

• Python >= 3.7
• CMake >= 3.14
• C++17 compiler (GCC on Linux, MSVC on Windows)

License

MIT