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← TechnologyWhich malfunction typically results when PLC watchdog timers are improperly configured in automated robotic assembly lines?
A)Indeterminate machine stall or pause✓
B)Encoder signal phase timing errors
C)Spurious activation of safety relays
D)Localized overheating of servo motors
💡 Explanation
Improper PLC watchdog timer settings cause a failure to reset the PLC’s program execution loop; thus, the system enters an error state. Because the machine stops rather than behaving erroneously, spurious activation or localized overheating are not direct results; therefore 'machine stall' is correct.
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