WIZ550S2E not reconnecting to TCP server

S2E Module WIZ550 Series
3

Hello,

  • It is a capture made with a logic analyzer. It can be opened using the free Salae Logic Pro software. I have attached a Wireshark capture and Hercules screen capture. This data flow is the following:
  1. The device sends 16 bytes on start-up to the TCP server (Hercules);
  2. The server responds with 16 bytes;
  3. I disconnect the cable and send 16 bytes from the server; as expected, the device does not respond;
  4. I reconnect the cable, send 16 bytes from the server and, as expected, the device responds;
  5. I close the server, open it again and wait a few seconds;
  6. I send 16 bytes from the server and the device does not respond (it should reconnect and respond);

  • My system is composed of MSP432 microcontroller connected via UART to WIZ550S2E.

  • I am programming the tool via UART, not using configuration tool; it is an application constraint to program WIZ550S2E via UART; however, the configuration tool could not find the module at my home computer (I described the situation in the other post Data mode not working on WIZ550S2E), however at my work computer it worked and I do not know why!

  • I am using UART to program WIZ550S2E;

  • The module is configured to use DHCP and connect as a TCP client to a server created on my computer using Hercules.

I still do not know why it does not work in data (transparent) mode.

Please tell me if you need other information.
Captures.zip (26.4 KB)