Class B (IO-Link)

Class B (IO-Link)

Class B IO-Link ports are a specialized type of interface used in industrial automation to enable advanced communication between devices and systems. These ports differ from Class A IO-Link ports in their design, function, and application. They offer specific advantages for certain industrial scenarios.

What Are Class B IO-Link Ports?

Class B IO-Link ports are designed to support IO-Link communication while providing enhanced power isolation. This makes them highly suitable for applications where separating power sources is critical. For example, for operating devices like valve banks. 

One of the standout features of Class B ports is their ability to isolate output power using separate commons, which adds an extra layer of safety. For proper operation, it is critical to use isolated power supplies for connected devices.

Compatibility with Class A devices is possible in many cases, provided that the additional pins of Class B ports do not conflict with the device’s design or functionality.  

Class B IO-Link Port Pins

Class B ports have a specific pin configuration. These ports separate device power and output power grounds, making them suitable for power-sensitive applications. 

Here’s a summary of their configuration:

  • Pin 2 and Pin 5: Dedicated to an isolated power source for output functions, ensuring that these pins do not double as I/O pins.
  • Pin 3 and Pin 5: Provide distinct grounds for device power and output power, respectively.

This pin layout reduces electrical interference and supports the safety features necessary for industrial environments.

Class B IO-Link Ports and IO-Link Wireless

Class B IO-Link ports are indispensable in industrial automation systems that require robust communication and power isolation. 

CoreTigo’s IO-Link Wireless products support both IO-Link Class B and IO-Link Class A devices.

Class B
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Class B (IO-Link)

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