Hi, I want to communicate with my device (a CARD) equipped with a serial port. First i must Open a com with 300 Baud rate, send a command and verify the response. Second: Sent a command Third: Open a second com with a Baud rate 9600 in the same Port Fourth: Use Visa READ, and i must read a chain of character that confirm that open session is OK. The problem is I don’t receive any response when i use visa READ in the Fourth Step and Bytes at Port = 0. The picture below:

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Hello,

I have solved the problem, the solution is to make more time before reading the reply on the card.

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