For controller installations where end devices are located long distances away, field I/O or distributed I/O can greatly improve system efficiency and reduce wiring costs. Localizing field terminations at the machine being controlled allows for easier installations and faster troubleshooting.
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Field I/O systems are available in a variety of form factors and protocol compatibility, most typically Modbus (RTU or TCP) and Ethernet or EtherNet/IP. IO-Link is a newer and very popular field I/O system that incorporates extended diagnostic information from IO-Link compatible sensors/actuators with standard I/O signals.
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Typical of field I/O systems, IO-Link connects remote sensors and actuators to a central control system, providing real-time process values and control signals. However, IO-Link also allows additional data to be collected from intelligent field devices, including the device's condition, configured parameters, and performance data.
The Protos X compact, modular field I/O system allows a user to monitor and control remote field I/O devices without having to invest in another controller. The easy-to-install design saves time and excess field wiring and speeds up troubleshooting.
The Stride Field I/O family of modules provides a simple and economical means to connect inputs and outputs to a Modbus TCP communications network. Each module operates as a standalone Modbus TCP server, and can be configured via a built-in web server.
The NITRA Pneumatic Automation Link (PAL) system is an electro-pneumatic system as well as a field I/O system that can include electrical I/O or pneumatic valves or both. A system can be controlled either by an EtherNet/IP master or direct wiring (for configurations with exclusively pneumatic valves).
Terminator Field I/O combines I/O points with their field terminations into a modular package to save panel space and money. With Terminator I/O, you can use distributed I/O nodes close to field devices for faster and more efficient wiring and troubleshooting.
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