Mode O Waveforms | Advantech PCM-3780 specification

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

Image 67

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

Contents

PCM-3780 Ch Counter/Timer with Ch TTL DIO Module Copyright 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 Mode PCM-3780 Counter Mode Applications Installation Guide Installation Flow Chart Register-level Programming Software OverviewDevice Drivers on the companion CD-ROM Device Drivers Programming Tools Device Drivers Programming Roadmap Programming with Device Drivers Function Library Troubleshooting Device Drivers Error Wiring Cables AccessoriesWiring Boards Hardware Installation Unpacking Companion CD-ROM Driver Installation Different Options for Driver Setup Installing the Module Hardware InstallationPage Pin Assignments & Jumper Settings Overview Signal Connections Interrupt Level IRQ Setting JP1 Switch and Jumper Settings Base Address Setting Base Address Setting SW1 CN3 I/O Port Connector Connectors Pin AssignmentCN4 Counter Interface Connector Reference Direction Description Connector Signal Description Using Direct I/O Using Advantech 32-bit DLL DriverPeriod Measurement Frequency Measurement Frequency Measurement Specifications Digital Input/Output Programmable Counter General Page Block Diagram Appendix B Block Diagram Register Structure & Format I/O Port Address Map Appendix C Register Structure & Format Table C.1 Register Offset Address Table Register Format CE CE CM6 to CM3 Count Control CM6 Counter 0/1 Mode RegisterCM2 Output Enable Control CM1 to CM0 Output Control CM15 Gate Active Edge or Level CM7 Count Source EdgeCM13 to CM12 Gate Source Selection CM14 Gating Polarity Selection Counter 0/1 Hold Register Counter 0/1 Load Register CE1 to CE0 Counter Command Enable Bit Counter 0/1 Command RegisterCounter Command Enable Register C2 to C0 Command Code Interrupt Status Register Interrupt Control Register O Direction Control Bit Interrupt Clear RegisterDirection Control Register Port A/B/C Interrupt Status Register DV3 to DV0 Fout Divider Divide by 1 to 16 0000 = Divide by Fout Register FS2 to FS0 Fout Source FOE Fout Output Enable Waveform of Each Mode Counter Mode Descriptions Appendix D Waveform of Each Mode Table D.1 PCM-3780 Counter Mode Table D.2 PCM-3780 Counter Mode Software-Triggered Strobe with No Hardware Gating Mode a Waveforms Software-Triggered Strobe with Level Gating Mode B Waveforms Hardware-Triggered Strobe Mode C Waveforms Rate Generator with No Hardware Gating Mode D Waveforms Rate Generator with Level Gating Mode E Waveforms Non-Retriggerable One-Shot Mode F Waveforms Software-Triggered Delayed Pulse One-Shot Mode G Waveforms Mode H Waveforms Hardware-Triggered Delayed Pulse Strobe Mode I Waveforms Variable Duty Cycle Rate Generator with No Hardware Gating Mode J Waveforms Variable Duty Cycle Rate Generator with Level Gating Mode K Waveforms Hardware-Triggered Delayed Pulse One-Shot Mode L Waveforms Hardware-Triggered Strobe with Edge Disarm Mode O Waveforms Non-Retriggerbale One-Shot with Edge Disarm Mode R Waveforms Hardware-Triggered Delayed Pulse Strobe with Edge Disarm Mode U Waveforms Hardware-Triggered Delayed Pulse One-Shot with Edge Disarm Mode X Waveforms