 /*
 	This function monitors the motor driver signals on the laser cutter.
 	The signals are PWMs of a specific frequency. This function measures the
-	half-period of any signal detected and accumulates time when valid signals
+	period of any signal detected and accumulates time when valid signals
 	are detected. A polling subroutine continuously checks if an RFID tag is 
 	still present.
 	

	// some constants
	const int pollTimeout = 5;
	const int pollInterval = 900;
	const int minCount = 5;
	// some variables used in this scope
	unsigned char serialNumber[bufferSizeSNR];
	unsigned long startTime, elapsedTime = 0;

			// so, if lastPeriodX and lastPeriodY WAS a valid pair
			/*if ( inRange(lastPeriodX, lastPeriodY) ) {
				// check if the job was more than 5 seconds
				if (pulseCount > freeTime) {
					// calculate elapsed time in seconds
					return calculateTime(startTime);
				}
