Modbus RTU Slave
I2C Modbus RTU Slave Chip – IS4310
Price range: $1.95 through $3.00
The IS4310 chip is a Modbus RTU Slave chip with up to 500 holding registers available for your project. It connects to your microcontroller via I2C. No libraries needed. Ideal for sensors, actuators, or mixed setups.
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This product has multiple variants. The options may be chosen on the product page
USB Dongle for Modbus RTU
$25.00
USB to RS485 cable with the standard Modbus RTU pinout on its RJ45 connector. Its FTDI chip appears as a standard COM port, usually without installing drivers. Ideal for using your PC as a Modbus RTU Master or Slave and for testing our Modbus RTU boards and modules.
Modbus RTU Slave Module – IS4310-M3
$4.80
The IS4310-485M3 is a compact Modbus RS485 module with an integrated IS4310 RTU Slave chip. It includes an RS485 transceiver, dual RJ45 connectors, and 500 Holding Registers accessible via I2C. Ideal for fast integration, it simplifies Modbus communication by eliminating the need for protocol stack implementation.
Isolated RS485 Modbus RTU Slave Module: IS4310-ISO485M1
$4.80
The IS4310-ISO485M1 is an isolated RS485 Modbus RTU slave module built around the IS4310 chip. Your microcontroller, Arduino or Raspberry Pi simply reads and writes 500 Holding Registers over I2C, while the module handles the Modbus RTU protocol on a galvanically isolated RS485 bus with two daisy-chained RJ45 connectors. Ideal for harsh environments and long cable runs.
RS232 Modbus RTU Slave Module: IS4310-232M5
$4.54
The IS4310-232M5 is a compact RS232 Modbus RTU Slave module with the IS4310 chip. It includes an RS232 transceiver, a DB9 connector, and 500 Holding Registers accessible via I2C. Ideal for adding a Modbus RS232 port to sensors, actuators and controllers without implementing a protocol stack.
Kappa4310Ard: IS4310 Demoboard for Arduino
$15.00
The Kappa4310Ard is a plug-and-play evaluation board for the IS4310 Modbus RTU chip. It features an RS485 interface, dual RJ45 connectors, 500 Holding Registers, and built-in RGB LED and potentiometer for quick testing. Compatible with Arduino and STM32 Nucleo, it's ideal for rapid Modbus prototyping without the need for custom hardware.
Kappa4310Rasp: IS4310 Demoboard for Raspberry Pi
$15.00
The Kappa4310Rasp is a plug-and-play evaluation board for the IS4310 Modbus RTU Slave chip designed for Raspberry Pi. It enables fast prototyping without the need for soldering.
Modbus RTU Slave Chips for RS-485, RS-232, and RS-422
Modbus RTU slave chips are specialized integrated circuits designed to implement the Modbus RTU protocol reliably and efficiently over industrial communication interfaces such as RS-485, RS-232, and RS-422. This category includes ICs and modules optimized for device manufacturers who need robust, deterministic, and interoperable serial communication in automation, monitoring, metering, and control systems.
These chips simplify the creation of Modbus-compatible devices by handling low-level protocol timing, CRC generation, address management, and frame parsing. By using Modbus RTU slave chips, designers can ensure stable and noise-resistant communication, even in environments with long cable distances, electromagnetic interference, or multi-drop network requirements.
Benefits for Product Development Using INACKS Modbus Solutions
INACKS integrated circuits and modules significantly accelerate development by eliminating the need for firmware engineers to implement the Modbus RTU protocol manually. This reduces engineering complexity, shortens time-to-market, and lowers development costs. Manufacturers can focus on the functional logic of their device while relying on a pre-validated, protocol-ready communication layer.
Typical questions include: how to ensure Modbus RTU reliability, how to integrate Modbus with RS-485 or RS-422 transceivers, how to minimize firmware workload, or how to guarantee protocol compliance. INACKS Modbus RTU slave chips address these concerns by providing ready-to-use communication engines that simplify deployment and improve long-term maintenance.