7 Product-specific CAN objects XN300 slice modules7.13 XN-322-16DIO-PC05Gateway XN-312-GW-CAN 06/16 MN050003-EN www.eaton.eu 161Figure 69: PWM signal measurementa High Timeb Low TimeDesign of the data bytes:7.13.9 PWM Period Time (Object 0x3179, 0x317B, 0x317D, 0x317F)Objects 0x3179, 0x317B, 0x317D, 0x317F are 16-bit count registers used torecord the period for the signal present at the corresponding inputs.Period t p will be the time that passes between the rising edges of the signalat the digital input. When the first rising signal edge is detected, a counterwill start being incremented every μs. Then, when the second rising signaledge is detected, the counter value will be recorded in the corresponding 16-bit PwmPeriodTime(x) counter register. Once the value is transferred toPwmPeriodTime(x), the counter will be reset.Feature Description Value EDSName PwmHighTime1 0x3178 [MxSubExt317x]ParameterName=PwmHighTimexObjectType=0x7DataType=0x0006AccessType=roPDOMapping=1Count=1PwmHighTime2 0x317APwmHighTime3 0x317CPwmHighTime4 0x317EDescription PWM High Time xObject Code VARMapping PDOManualData type UNSIGNED16Sub index 01 … FE hexAccess roByte Byte 0:Sub index1≦n≦254B15B14B13B12B11B10B9B8B7B6B5B4B3B2B1B0MSBLSBt① ② ②①tP t P
