W7500P & CISCO SF110d switch problem.
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RE: W7500P & CISCO SF110d switch problem.
by Nuno ·
Hello,
I am having this issue on a critical project, sporadically W7500P-S2E will “pause” network communications for up to 3s. Is there a new official FW version with this fix? The thousands of chips I have seem to have version 1.3.3.
Thank you
RE: RE: W7500P & CISCO SF110d switch problem.
by Nuno ·
Hi again,
Ok, I realized that this fix is already included in 1.3.3.
But I sporadically (like once a day), between a Windows machine and a board with 7500P connected through a single industrial switch (more often with an extra switch), see that the W7500P freezes for up to 3s, then resumes communication. TCP connection is not lost, but 7500P clearly did not see the TCP/IP packets sent to it while it was frozen. Any ideas?
Thank you
RE: W7500P & CISCO SF110d switch problem.
by Nuno ·
This is what I see, and it’s always the same packet pattern.
The 1st packet from IP .36 (wiznet) after blindness, in the black area, is a retransmission of the reply to the previous message (the 1st packet in the image). So 7500P spent at least 2.6s without seeing TCP/IP packets.
The last packet in the image is a modbus error message because all the IP .10 retries were sent to the 7500P’s serial port as a single message and rejected by the modbus server on the other end of the serial port as a wrong message.