Error -101 Agilent 34401A
Hi,
I get an error -110 which I did not find in any document.
I send any command and get the right response but every time I send a command the DMM sound a beep witout any error on the screen, but when I check the the errors in the menu it display -101.
I use the cable F1047-8002 which all cross over wires from DMM to my board.
Thank you.
elik
Sorry for the mistake. Indeed it's error -101, but I checked the messages which are SCPI and I get the right reponse, but when I send a message that request response like data, voltage, resistance the DMM 34401A always beep withh error -101.
The response it exactly what expected, the data come back clean, and so the message that was sent.
It does not occur when I send SCPI command that not requires response.
Checking with PC terminal software by sending the command(hexa or ascii) did not show anything extra character.
I also short the CTS and DSR on both side MCU side and DMM side as shown by cable 24542U drawing with no success to solve the problem.
I tried to work with no flow control and CTS and RTS with no success as well.
You may have to send the SYST:REMote command first. You should be able to send the SYST:ERR? and read back the result. Are you using an RS232 to USB adaptor? In other words, what is on the other end of the F1047-8002 cable? I don't think you buy a PC with an RS232 control port any more. What IO Libraries are you using? With the Keysight IO Libraries and the following settings, I have no problems. 9600 baud, Data Sixe: 8 bits, Stop Bits: 1, Parity: NONE, Flow Control: NONE. I use the FTDI US232R-100, but there are many cheaper ones on Amazon.com that work.
Hi,I do not have any problems sending commands from PC, the data return correctly without any beep or error.I'm trying to send SCPI commands from MCU that has USART.The MCU has all the serial signals except DTR DSR.On the other end of the cable next to the 34401A there is adapter that connects the RTS signal to the DTR in order to provide a voltage for devices that need it. CSR is connected to DSR for the same reason.On the MCU I'm only using RX TX and ground with no flow control.Having this setup what I need to do on the MCU side to avoid this -101 error?
Thank you.
Elik
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Your MCU is apparently sending an additional control character on its own that probably corresponds to "new line", EOL (end of line), or some other character that the 34401A doesn't handle. You'll have to talk to an expert on that MCU to find out how to fix this. The MCU serial communications setup might have some information about this.
Are you sure about error 110? There is not supposed to be any error 110. Error -101 occurs when there is an invalid character in a command sent over the bus to the 34401A.