Diagnostics and Power On Test is changing rapidly. Switch mode power supply (SMPS) systems, motor control and motion control systems are capable of doing significant damage. Using startup Power On Test or Power On Self Test (POST) makes sense in these environments particularly when humans are around the machines.
The dianostics module in the system and the other accompanying modules which are required to maintain the health of the system. Generally the POST will run before anything else to check the basic processor and memory operations.
Diagnostics and Power On Test will ensure the health of the basic system processing elements independent of the application. By ensuring that the runtime environment works properly first, users will not be put in danger with faulty equipment. Imagine an ABS system on a car without POST!
Other good diagnostic and power on test features are:
- Dynamic monitoring of key values
- Data logging of key values
- Emergency shutdown in hardware (for PWM)
- Loopback diagnostics for communications
- Remote loop diagnostics for communications
All of these lead to safer more reliable systems and more satisfied customers.
Note that the bios supply needs separate regulation and that up to four PWM signals are used with gate drivers. The Diagnostic and Power On Test should test all of these various commuication links inputs and outputs if possible.
DSPnano and Unison both have integrated Diagnostic and Power On Test support. Features vary by processor - consult the factory for details.
For more details on Diagnostics and Power On Test compoents and associated consulting services, please contact us.
