Precor AMT12 base, Руководство по обслуживанию

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The processor in the console provides user input, user display, and automated control to the
system, while the processor in the lower electronics module performs the actual machine function.
The two processors communicate via a serial data stream.
When the user makes a request of machine function to take place via the keypad (user input), the
console processor communicates that request to the processor in the lower electronics module via
the serial data stream.
Once the lower processor receives the request the lower control module performs the machine
tasks associated with the request. The console processor goes about its business of monitoring
keypad entry and providing display feedback.
The lower processor also provides status back to the console processor (via the serial data stream)
to report if everything occurred properly, or if an error code needs to be written to the error log.