Zenisu Keisoku,Inc. ZS-6220P User Manual
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- 22 -(2) The data that is input from parallel port, send to the PC. Synchronous inputIt activates the UAR output and waits for the STRT pulse. It takes 4 bits of data from theinput port and transmits it to the PC.End transmission to USBData holdInput dataＳＴＡＲＴUAR outputPositive logic Asynchronous inputWhen the “S” command comes from the PC, it captures data from the input port andtransmits it to the PC without worrying about the state of the signal like thesynchronous input.6. API function6.1. List of functionsFunction name DescriptionZupOpen Open the USB port and initializeZupClose Close the USB port and execute driver termination processing.ZupRead Data is read from all input ports.ZupWrite Data is written to the output port.ZupTrigger Output the pulse from the TRG signal.ZupClear Output the pulse from the CLR signal. |
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