Field Device Diagnostics

Festo incorporates diagnostics into most field devices for actuation. These diagnostics enable the user to localize errors and minimize troubleshooting time. The type of information available includes: internal faults, module or channel faults, and trace data (a log of the last 40 diagnostic events). In addition, some devices have preventative maintenance diagnostics to assist in pro-active maintenance of equipment. The diagnostics are not just useful for the field device, but also the auxiliary devices connected to these devices, and the interconnections themselves. For example, valve manifolds are not only equipped with internal diagnostics for sub-base and module health, but also can help to diagnose problems with connected sensors, output devices, power supply connections, and wiring between these devices.

Diagnostics are achieved via four pragmatic scenarios:

LED's for visual indication

All Festo electronic components have basic LED's for indicating general health.
Advanced field devices have more sophisticated LED behavior. Either by the use of bicolored LED's or flashing sequences, a user can narrow the scope of many problems by visually inspecting the valve manifold. Examples include, bicolored LEDs for solenoid valves and individual fault LED's for modules & channels.

Diagnostic information via field device networks

Status information of many devices can be immediately transferred to a controller via either a sensor, device, or fieldbus type network.
This is the fastest method possible, to allow the user to react immediately if necessary.
The information can be configured from a basic byte of data to a bidirectional I/O diagnostic interface.

Diagnostic information accessed via network software

Visualize diagnostic information from a central location.
Specific network software or open standards are possible, such as OPC or web browser. The pictures on the left is an example of how performance results can be viewed on a PC.

Plug-in HMI for field device

Fast and easy-to-understand text descriptions.
Retrieve any information on the spot.

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CPX Electrical I/O Terminal		Web Page
Handheld for the CPX Valve Terminal, Type CPX-MMI (2 pages) 2.2005		Data Sheet