IO-Link Wireless

IO-Link Wireless is a wireless version of IO-Link for factory control systems. It transmits sensor and actuator signals over virtual point-to-point radio connections between an IO-Link Master and star-connected IO-Link Devices. It uses the 2.4 GHz ISM band with time and frequency division multiplexing and keeps the same cyclic and acyclic application interfaces as wired IO-Link.

Source checked1/1 values · 2026-10-25

Specification

1 source

Transports	other
Architecture	master slave
Encoding	binary

Study notes

IO-Link Wireless is based on standardized wired IO-Link technology.
The application interfaces for cyclic and acyclic data are compatible with existing IO-Link descriptions.
Programming and system design do not change compared with wired IO-Link.
The architecture consists of an IO-Link Master and star-shaped connected IO-Link Devices.
Single point-to-point connections are mapped virtually via radio.
Virtual connections use a combination of time division multiplexing and frequency division multiplexing.
8 Devices are grouped into tracks (TDM); 5 tracks per master are transmitted in parallel (FDM).
The document states no difference in processing wired IO-Link and IO-Link Wireless data.

Safety

Operating limit: up to 3 Wireless Masters can coexist in the same airspace.
Operating limit: each Wireless Master supports up to 40 Wireless Devices.
Operating limit: maximum 120 Wireless Devices within a 20x20 meter production cell.
Operating limit: 5 ms cycle time for 5 tracks per master transmitted in parallel.
FDM channel hopping must be optimized and synchronized for all connected Devices to maximize reliability and minimize packet error rate.
Uses the open 2.4 GHz ISM band divided into 80 1 MHz channels.