5. MAINTENANCE
5.
Maintenance
5.1.
Module Diagnostics
One feature of the Nexto Series is the existence of several indication forms for diagnostics which vary from user application
available diagnostics, web pages, LEDs to LCDs. The documentation of each module indicates all available diagnostics.
In this document the OTD functionality is described, which is within all Nexto Series, except the modules that make part of
Nexto Jet solution. Such functionality allows the tag access, diagnostics and description of all modules and I/O points through
the diagnostics keys, module display and CPU display.
5.1.1.
One Touch Diag (OTD)
As previously described, the tag access functions, diagnostics and description of all modules and I/O points are related.
There’re three main components that are highly referenced on this explanation:
CPU graphic display
Accessed module display
Accessed module diagnostic switch
5.1.1.1.
Diagnostics mode access
Independently from what is displayed on the CPU display, after a short pressing on the diagnostic switch of a specific
module, the tag and the module’s active diagnostics will be shown on the CPU display. These data are displayed in the form
presented on figure below.
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