I am trying to write to an older GPIB device. The command is ME000000000 I have put the following command in my VB program call ibwrt (0,8,sendstr,NLEND) where sendstr is sendstr=chr$(27) & "ME000000000" & chr$(13)
You can send any 8-bit ASCII character across GPIB. If the character has such an equivalent then it is possible to use IBWRT to send the command. I believe the ASCII equivalent of 1Bh or decimal 27 as you have posted above.
This older instrument may not respond to an EOI line. It may still be expecting an End-of-String (EOS) character. If a carriage-return is not the EOS, then maybe a line-feed is necessary. Otherwise it looks right.
If in doubt, use NI-Spy to see what is being sent over the bus.
Randy Solomonson Applications Engineer National Instruments
