N1470A high voltage power supply: Serial communications through USB VISA: (Hex 0xBFFF0015) Timeout expired before operation completed.

[thomas8491]

I have a Caen N1470A high voltage power supply.

I get a Visa time out when i send *IDN? or a Read command.
Writing to it seems not to be a problem.
I use the  National Instruments Measurement & Automation Explorer (NI-MAX).
My NI-MAX settings are as follows:

Port settings (Hardware):
Baud rate: 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: XON/XOFF


Serial Settings:
Baud rate: 9600
Data bits: 8
Parity: None
Stop bits: 1

Flow control settings:
XON/XOFF
Software control:
Xon Char x11
Xoff Char x13
Output State:
Ready To Send (RTS): asserted
Data Terminal Ready (DTR): asserted

I/O settings:
Timeout: 2000 ms
I/O Protocol: Normal
Termination Methods:
Supress End on reads: unchecked/unselected
Send end on Writes: checked/selected
Enable termination character: unchecked/unselected
End mode for reads: Termchar
End mode for writes: none
Termination Character: Line feed \n, value: xA
Error replacement character: x0

The above settings are shown also in the uploaded photos.

I have also uploaded the manual of the source.

Any ideas??

Thank you very much for your help and time!!

[Minions · Accepted solution]

The documentation suggests that this does not follow the SCPI command set.  See section 3.6 of the manual for command and response parameters.

[thomas8491]

Hi Minions!

You are right IDN is not supported and not noticing that confused me.

I have solved the problem in Matlab:

If i create a visa-serial object:

s =visa('ni','ASRL5::INSTR');

I cannot set the termination caharacter to CR/LF.

So i created a 'normal' serial object:

s = serial('COM5','Baudrate', 9600, 'Flowcontrol', 'software' ...
 ,'Parity', 'none', 'StopBits', 1, 'DataBits', 8 ...
 ,'Terminator', 'CR/LF'...
 );

which allows me to set the terminator and now everything works