Fieldbus Technology

Integrate and distribute I/O control for pneumatic valve manifolds on a fieldbus network through a single node. 


Principles of Fieldbus Network Technology

The Emerson ASCO G3 Electronic Fieldbus platform easily integrates communication interfaces to pneumatic valve manifolds with input/output (I/O) capabilities. This allows programmable logic controllers (PLCs) to more efficiently turn valves on and off and to channel I/O data from sensors, lights, relays, individual valves, or other I/O devices via various industrial networks. 

The G3 technology also contains a graphic display that simplifies complex, time-consuming configuration and commissioning.

How It Works

Sub-Bus Network

Emerson fieldbus technology permits more flexible, cost-effective architectures. Its sub-bus technology allows modules traditionally part of a centralized valve manifold to be detached and used in a distributed architecture. Engineers can now configure the manifolds and I/O the way the machine is laid out, without adding communication nodes. On Industrial Ethernet applications, this enables a reduction in the number of Ethernet switches and communication nodes — greatly decreasing cost and complexity.


Modular fieldbus manifold designs simply connect together via easily removable clips and screws. This allows easy assembly and effortless last-minute changes for OEMs. For the end user, modularity permits quick, trouble-free field changes. I/O modules can be removed and replaced without forcing the user to dismantle the entire pneumatic valve manifold system. 

Graphic Display

Integrated graphic displays with plain-language messaging provide users and OEMs with a wealth of point-of-use status and diagnostic information, plus setup and version tracking data at both the I/O-module and communication-node levels. Error messages are generated and cleared automatically. The display’s pushbuttons allow the user to navigate quickly through intuitive menus for easy and effective troubleshooting.


Five Critical Factors for Selecting Fieldbus Valve Manifolds

Learn about the five essential factors in selecting fieldbus valve manifolds — commissioning, distribution, modularity, diagnostics, and recovery.

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