I/O Systems Evolution: Getting Smarter and Simpler

Operating Systems: I/O Systems

The Evolution of I/O Systems:

• I/O systems, often overlooked, play a critical role in control loops.
• Manufacturers offer distributed I/O for flexibility and cost savings.
• PLC suppliers provide remote I/O with IP-based communication.
• Some systems opt for software-configurable I/O.
• Intelligent terminal manufacturers offer slice I/O for versatility.
• The trend is towards reduced cabling and hardware dependence.
• Wireless systems are gaining ground, particularly in remote locations.

Power Supply Advancements:

• Redundant power supplies with local battery backup are crucial.
• Field power from two separate buses mitigates single points of failure.
• Ethernet-Advance Physical Layer (Ethernet-APL) simplifies field device connectivity.
• APL can deliver power and Ethernet signals over one twisted-pair cable.

Adapting to New Protocols:

• Transitioning to new protocols like Foundation Fieldbus can be challenging.
• APL-connected gateways can ease protocol conversion.
• Flexibility extends to protocols like ProfiNET or EtherNet/IP.

The Future of I/O Systems:

• I/O systems have evolved beyond central control rooms.
• Market demands drive higher data concentrations, enhanced capabilities, and cost-effectiveness.

In Summary:

• I/O systems have transformed, offering flexibility and cost savings.
• Power supply advancements and APL simplify field device connectivity.
• Adapting to new protocols is feasible with the right gateways.
• The evolution of I/O systems continues to meet market demands.