Sensors, Connectors, RFID & Vision
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I/O Master Blocks

I/O master blocks from Balluff connect discrete and analog I/O sensors and actuators to the control level via a fieldbus or network. The number of lines is substantially reduced by the use of the blocks. I/O blocks offer additional functions for signal preprocessing and expanded diagnostic options. Different designs and connection techniques enable solutions for a wide variety of applications, even under the most extreme environmental conditions.

Ethernet/IP IO-Link Master Block for Welding Environments

Balluff’s new IO-Link master helps simplify smart service integration in harsh industrial environments. Electromagnetic interference (EMI) can negatively impact work processes, interfering with digital, analog and communication equipment. The Ethernet/IP IO-Link Master Block can insulate your productivity by:

  • Reducing inductive noise with coil choke filters
  • Reducing conductive noise with its fiberglass-reinforced plastic, polypropylene sulfide (PPS) housing, that breaks conductive loops
  • Reducing capacitive noise by raising the PCB further from the backplane

These weld-immune modules made of fiberglass reinforced plastic reliably resist weld splatter, welding currents and electromagnetic noise fields, and ensure reliable signal transmission in spite of ambient electrical disturbances.

A built-in display allows configuring of network parameters and aids during troubleshooting. Connect to its embedded web server to remotely configure the block and connected IO-Link devices. Like other Balluff IO-Link master blocks, this product offers advanced features. Its built-in display allows configuring of network parameters and aids during troubleshooting. Connect to its embedded web server to remotely configure the block and connected IO-Link devices. In difficult EMI and welding environments, this block keeps performing.


  • Filters multiple types of EMI PPS composite body resists weld spatter
  • Four Class A and four Class B IO-Link master ports
  • Built-in enhanced web server
  • Display for configuring network parameters
  • Up to 9A of output power with 2A per channel

Slim IO-Link I/O Master Blocks

The IP67 protection rated, machine-mount, four-port Slim IO-Link master has the same distributed I/O master capabilities and functional features as the popular Balluff eight-port IO-Link master series in a more compact format. This module is available on three popular industrial networks: Ethernet/IP, PROFINET and EtherCAT. In addition, Balluff again expands their wide portfolio of IO-Link masters by offering these form factors with IO-Link Type A or IO-Link Type B port functionality.

The Type A and Type B functionality for the IO-Link port differs in the way output power (or aux power) is configured for each IO-Link master port. With 9A of total available current at 24VDC, the Type A master can host up to 124 configurable I/O points or 4 IO-Link enabled smart sensors and 4 additional I/O. The Type B Slim IO-Link master, with the same power capacity, is ideally suited for connecting IO-Link valve manifolds or devices that require galvanic isolation for output power, such as needle grippers.


  • All benefits of IO-Link distributed I/O in compact space
  • 32 bytes of bi-directional data communication per port for smart sensors, measurement devices and high density I/O architectures
  • Up to 124 I/O points per network node with Balluff expansion I/O hubs
  • Built-in network switch for daisy chaining & ring topology networks
  • 2A of output current per channel with 9A max output current
  • Output power is separated from device power on both Type A and Type B port IO-Link masters, enabling switching off in case of safety breach without losing device state
  • Rugged machine-mount design with IP67 protection rating for harsh industrial use
  • Integrated state-of-the-art, full-service web server functionality for IO-Link configuration using IODD files
  • Ease integration with Add-On-Instructions and function blocks available for download
For more information on I/O Master Blocks from Balluff, as well as how Power Motion can help, please contact us. We have locations in St. Louis, Kansas City and Little Rock, providing distributor and automation solutions services for Missouri, Kansas, Arkansas, Nebraska, Southern Illinois, Southern and Western Iowa, Northern Louisiana, Eastern Oklahoma and Northeast Texas. Not all products available in all areas.

Balluff I/O Master Blocks