Nikita Petrov
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Hello everyone! Theme up, I have faced the same problem. I'm guessing, it's beause of bad sectors in flash memory - images download stops at sector 11 of flash memory, then returns error 391. Is it fixabe? PLC is V1040-T20B. Regards.
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Hello! Yes, it filled with 0-s (after reset), and holds last value received from port in first element of buffer. By the way, it is always last byte of send message, i. e. CRC. No problem, I have sent it to support@unitronics.com. Regards.
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Thank you for answer. Buffer tag is unique for Rx. I'm using ComPump (PC prog.) to comprise messages, guess they are similar with Hercules. So, I send message from PC and want to see it in PLC's tag, but it won't work . Message contains ASCII-symbols, for examle: <STX>blabla123<ETX><CRC>. Regards.
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Hello! One more question about Rx\Tx. I'm using Rx box and output "B" of it fills buffer tag with only 1 byte in the current plc cycle, even incoming message consists of 2, 3, etc. Could you please help me with advice? Regards.
