error_indication
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| error_indication [2018/12/12 15:17] – akuzmuk | error_indication [2019/01/08 09:07] – [Communication issues] akuzmuk | ||
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| ===== Communication issues ===== | ===== Communication issues ===== | ||
| - | If any register can't be read over serial or Ethernet interfaces ERR led will blink, | + | If any register can't be read over serial or Ethernet interfaces ERR led will blink. Here is example: |
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| - | Here is example | + | |
| {{:: | {{:: | ||
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| In this example there is no response from PLC over built-in RS-485 port. You can see TX LED blinking when request sent and no RX LED activity. This means that WebHMI does not receive any response on these requests. | In this example there is no response from PLC over built-in RS-485 port. You can see TX LED blinking when request sent and no RX LED activity. This means that WebHMI does not receive any response on these requests. | ||
| + | If you have very short scan time and too many reading errors ERR led can light permanently w/o blinking. | ||
error_indication.txt · Last modified: 2022/01/15 17:56 by 127.0.0.1