WOODWARD 9905-971 MODULE

Woodward MODULE in stock 9905-971

Product Descrition

A Smart I/O module has its own on-board
microcontrollers. The modules described in this chapter are Smart I/O modules.

During initialization of a smart module,
the module’s microcontroller turns the LED off after power-on self-tests have
passed and the CPU has initialized the module. The LED is illuminated to
indicate an I/O fault.

The CPU also tells this module in which
rate group each channel is to run, as well as any special information (such as
the type of thermocouple in the case of a thermocouple module). At run time,
the CPU then periodically broadcasts a “key” to all I/O cards,
telling them which rate groups are to be updated at that time. Through this
initialization/key broadcast system, each I/O module handles its own rate-group
scheduling with minimal CPU intervention.

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