STMicroelectronics P-NUCLEO-IOD5A1 is a new modular IO-Link development kit designed to simplify building actuators and sensors by providing all necessary hardware and software for industrial automation projects.
We’ve recently come across more solutions for the 3-wire IO-Link bi-directional and point-to-point (P2P) industrial communication protocol based on the IEC 61131-9 standard with ICs and products such as Renesas CCE4511 IO-Link master, STMicro EVLIOL4LSV1 IO-Link actuator board, and an IO-Link Master HAT for the Raspberry Pi. The P-NUCLEO-IOD5A1 devkit appears to be an all-in-one IO-Link combining all hardware needed for prototyping.
P-NUCLEO-IOD5A1 content:
- MCU Board – NUCLEO-G071RB board based on STMicro STM32G071RB Arm Cortex-M0+ MCU @ 64 MHz with 128 KB flash and 36 KB RAM, and equipped with Arduino and ST morpho headers.
- Transceiver board – X-NUCLEO-IOD02A1 with L6364Q dual-channel IO-Link physical layer IC to handle communication with the IO-Link master. It also includes protection against surges and reverse connection
- Actuator board – X-NUCLEO-DO40A1 with IPS4140HQ industrial 4-channel high-side power switch, which can drive 500mA loads and integrates thermal protection and per-channel short-circuit protection.
The STM32G071RB MCU on the NUCLEO-G071RB board runs the company’s IO-Link demo stack library (X-CUBE-IOD02), included in the companion software function pack (FP-IND-IODOUT1), which also includes software for controlling the power switch (X-CUBE-IPS). Sample code to operate the board as a sensor or actuator node is also provided.

The chips used in the kit, namely STM32G071RB, L6364Q, and IPS4140HQ, are exactly the same as in the more compact EVLIOL4LSV1 IO-Link actuator reference design board mentioned in the introduction. I assume the main benefit of the modular kit is that it gives access to more I/Os and standard expansion connectors like Arduino headers, while the EVLIOL4LSV1 can be integrated into products.
The complete P-NUCLEO-IOD5A1 kit is available now for $104.13 on ST’s eStore and distributors. For reference, the EVLIOL4LSV1 IO-Link actuator sells for $23.45. Additional information about ST’s modular IO-Link development kit may be found in the announcement and the product page.

Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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