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Question about serial port control

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Question about serial port control Visual Basic Programming forum discussing VB specific programming information. Quickly prototype and build applications with this robust and simple language.

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Old February 13th, 2003, 09:55 AM
jgarciallamas jgarciallamas is offline
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Question Question about serial port control
Hi,

I'm trying to use the MSComm control in order to communicate with a device through serial port. I'm sure this device works because I can check it with hyperterminal.
The problem appears when I send a command to the device with the MSComm's property Output and if I try to read the device's answer with MSComm's property Input, I read the command I sent before, so it seems as the Input and Output buffer were the same.
I tried to introduce a timing between the Output command and the answer of the device and the read was an empty string.

Any idea?
Thanks in advance.
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Old February 13th, 2003, 05:35 PM
M.Hirsch M.Hirsch is offline
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Old February 14th, 2003, 03:56 AM
jgarciallamas jgarciallamas is offline
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Smile serial port control
Thanks for the info but the device is not a modem. I have tried to communicate with this device through OnComm event but the results were the same as previous, it means not able to communicate.

Help.

Jose.
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