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| - | When a CUBLOC program download fails, check the communication port, cable, driver, firmware, and hardware status in sequence. | ||
| - | First verify the COM port using the ECHO test, shorting pins 2 and 3 of the RS232 connector to determine whether the issue is with the port or cable. | ||
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| - | If the test is normal, check cable connections, | ||
| - | If communication works but the download still fails, perform a firmware download to initialize the flash memory. | ||
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| - | When using a USB converter, ensure the COM port number is set between 1 and 9. | ||
| - | If the problem persists, perform cross-testing with another module to determine possible hardware failure. | ||
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| - | Common problem categories include download failure, RS232 communication errors, COM port configuration issues, and firmware corruption. | ||
| - | Diagnostic methods include the ECHO test, port configuration verification, | ||
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| - | Recommended resolution steps are changing the COM port number, checking cables and drivers, performing a firmware download, and conducting hardware cross-tests. | ||
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| ====== 다운로드 에러 발생시 해결방법 ====== | ====== 다운로드 에러 발생시 해결방법 ====== | ||