*IDN?

[IVIorse]

I send *IDN? but don't get a response from the epuipment. I made sure that i was writing and reading through the serial port correctly by using a loop back test. (connecting pins 2 & 3). What am i doing wrong?

[Albert.Geven]

are baudrate etc correct

did you try with hyperterminal and got an answer than sure the lines are ok

did you send crlf after the *IDN?

so the instrument sees the End Of Message that is standard in gpib but must be sent in rs232

Try to swap the wires on pin 2 and 3

we call rs232 the Regular Soldering 2->3->2 standard

are baudrate number of bits, etc correct

and sometimes the instrument looks on DTS or RTS to see if the other side is powered up.

success

[antea06]

Hi,

what kind of instrument are you communicating to? Have you already cheked on the instrument programming manual that it accept that command? I mean there are some instruments that use for istance "ID?" or "IDN?" or anything else instead of "*IDN?".

Regards