Advantech PCM-3780 manual Mode O Waveforms, Hardware-Triggered Strobe with Edge Disarm

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D.14 Mode O Waveforms

Hardware-Triggered Strobe with Edge Disarm

Mode O, shown in Figure O, is identical to Mode C except that the counter will be disarmed while an inactive-going gate edge is applied to the counter. And the counter will hold the count value until it is issued a LOAD command or REST command.

SOURCE

WR

GATE

COUNT

VALUE

TC OUTPUT

TC TOGGLED OUTPUT

SOURCE

WR

GATE

COUNT

VALUE

TC OUTPUT

TC TOGGLED OUTPUT

ARM

COMMAND

X

L

L-1

L-2

2

1

0

L

ARM

COMMAND

X

L

L-1

L-2

N+2

N+1

N

Mode O Waveforms

59

AppendixD

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Contents PCM-3780 Ch Counter/Timer with Ch TTL DIO ModuleCopyright Acknowledgements Two Years Product Warranty CE Notification FCC Class a Technical Support and Assistance Packing List Page Contents Appendix Specifications Introduction Features Counter Modes PCM-3780 Counter ModePCM-3780 Counter Mode Applications Installation GuideInstallation Flow Chart Register-level Programming Software OverviewDevice Drivers on the companion CD-ROM Device DriversProgramming Tools Device Drivers Programming RoadmapProgramming with Device Drivers Function Library Troubleshooting Device Drivers ErrorWiring Cables AccessoriesWiring Boards Hardware Installation Unpacking Companion CD-ROM Driver InstallationDifferent Options for Driver Setup Installing the Module Hardware InstallationPage Pin Assignments & Jumper Settings Overview Signal ConnectionsInterrupt Level IRQ Setting JP1 Switch and Jumper SettingsBase Address Setting Base Address Setting SW1CN3 I/O Port Connector Connectors Pin AssignmentCN4 Counter Interface Connector Reference Direction Description Connector Signal DescriptionUsing Direct I/O Using Advantech 32-bit DLL DriverPeriod Measurement Frequency Measurement Frequency MeasurementSpecifications Digital Input/Output Programmable CounterGeneral Page Block Diagram Appendix B Block Diagram Register Structure & Format I/O Port Address Map Appendix C Register Structure & FormatTable C.1 Register Offset Address Table Register FormatCE CE CM6 to CM3 Count Control CM6 Counter 0/1 Mode RegisterCM2 Output Enable Control CM1 to CM0 Output ControlCM15 Gate Active Edge or Level CM7 Count Source EdgeCM13 to CM12 Gate Source Selection CM14 Gating Polarity SelectionCounter 0/1 Hold Register Counter 0/1 Load RegisterCE1 to CE0 Counter Command Enable Bit Counter 0/1 Command RegisterCounter Command Enable Register C2 to C0 Command CodeInterrupt Status Register Interrupt Control RegisterO Direction Control Bit Interrupt Clear RegisterDirection Control Register Port A/B/C Interrupt Status RegisterDV3 to DV0 Fout Divider Divide by 1 to 16 0000 = Divide by Fout RegisterFS2 to FS0 Fout Source FOE Fout Output EnableWaveform of Each Mode Counter Mode Descriptions Appendix D Waveform of Each ModeTable D.1 PCM-3780 Counter Mode Table D.2 PCM-3780 Counter Mode Software-Triggered Strobe with No Hardware Gating Mode a WaveformsSoftware-Triggered Strobe with Level Gating Mode B WaveformsHardware-Triggered Strobe Mode C WaveformsRate Generator with No Hardware Gating Mode D WaveformsRate Generator with Level Gating Mode E WaveformsNon-Retriggerable One-Shot Mode F WaveformsSoftware-Triggered Delayed Pulse One-Shot Mode G WaveformsMode H Waveforms Hardware-Triggered Delayed Pulse Strobe Mode I WaveformsVariable Duty Cycle Rate Generator with No Hardware Gating Mode J WaveformsVariable Duty Cycle Rate Generator with Level Gating Mode K WaveformsHardware-Triggered Delayed Pulse One-Shot Mode L WaveformsHardware-Triggered Strobe with Edge Disarm Mode O WaveformsNon-Retriggerbale One-Shot with Edge Disarm Mode R WaveformsHardware-Triggered Delayed Pulse Strobe with Edge Disarm Mode U WaveformsHardware-Triggered Delayed Pulse One-Shot with Edge Disarm Mode X Waveforms