"ES" on serial read and write

[sheetalp22]

Hello! I am using the Serial Read and Write example VI given by labview. When I connect it to my serial port, in the response section, it says "ES" after I run it. I want it to read numbers from a lab weighing balance connected through serial port. So what do I do?

Image attached below!

[crossrulz]

What balance are you trying to talk to?  Could you link to the user and/or programming manual so we can see the communication protocol?

[sheetalp22]

Hello! Thank you for your response. The balance I am using is a Mettler Toledo ML4002E balance. Attached is the manual! Thank you again!

[crossrulz]

The *IDN? is not a valid command for this device.  To get a reading you need to send "S".

[sheetalp22]

By sending S, do you mean that my command should just consist of S?

[GerdW · Accepted solution]

Hi sheetalp,

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@sheetalp22 wrote:

By sending S, do you mean that my command should just consist of S?

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No, not "just" S…

Read your manual for your balance! I can recommend to take a closer look at chapter 23.2!

[sheetalp22]

That worked! Thank you!!