I need Fluke 187 & 189 DMM RS-232 commands

On 17 Jul 2006 13:44:34 -0700, snipped-for-privacy@gmail.com put finger to keyboard and composed:

Could you connect the Tx output of COMx to the Rx input of COMy and then use a comms app such as HyperTerminal to capture the data to a text file?

Could you view the contents of Fluke's .exe files with a hex editor? Look for text strings in the vicinity of known commands such as QM.

For example, in Win98SE you can view a file, in a DOS box, as follows:

edit /r /64 filename

The "/r" indicates read-only mode.

When you find new commands, use HyperTerminal to send them to the meter.

If the files aren't too large, you are welcome to email them to me.

- Franc Zabkar

Use a real serial port sniffing application (which requires another PC with 2 serial ports). You want to capture the command and reply side-by-side or it'll be a PITA to decipher the protocol.

On Tue, 18 Jul 2006 09:05:24 +0300, Jussi Peltola put finger to keyboard and composed:

Capture the command using the single-port technique that I have described. Then issue this same command manually by connecting to the DMM using HyperTerminal. You will then see both the command and the reply on your screen.

I have used a similar technique to decipher the proprietary protocol for a Casio digital diary.

- Franc Zabkar

If this is under windows, PortMon from Sysinternals is your friend. The site appears to be down right now; I guess they got slashdotted.

On Tue, 18 Jul 2006 23:20:30 GMT, Scott Newell put finger to keyboard and composed:

Thanks. The site is slow but the direct links appear to work OK.

- Franc Zabkar

On 17 Jul 2006 13:44:34 -0700, snipped-for-privacy@gmail.com put finger to keyboard and composed:

My Fluke PM97 Scopemeter uses the CPL Protocol. These commands appear to be the same as those used by the Fluke 180 series DMMs.

For example ...

QM = query for measurement data QW = query waveform QS = query setup RI = reset instrument ID = identification query

Contact me via email for more info.

- Franc Zabkar

X-No-Archive: Yes

Hi Franc,

I located the DLL file which I think contains instrument profile in the FlukeView Forms directory, which is less than 1MB. I sent it to your email, but it came back undeliberable. Please email me from the email address which you can accept the file. I will send again.

Thanks for your help.

On 20 Jul 2006 02:21:01 -0700, snipped-for-privacy@gmail.com put finger to keyboard and composed:

You need to de-spam my email address as per my sig line.

FWIW, the V4.08 firmware .bin file for a 190 series Scopemeter contains the following text (there may be some errors):

AS AT CI CL CM CV DS EM EO EX FM GD GL GR ID IS PC PS QC QI QM QP QS QW RB RC RD RI RS RT RW SO SS ST TA VE WB WC WD WT WW RN HO ZCD (?) DT RP IM MD

These look like Query commands: QC QI QM QP QS QW

See

I'd try PortMon as suggested elsewhere in this thread. IMO it looks like your best approach.

Otherwise you could try this:

edit /r /64 filespec

The above command (executed in a Windows DOS box) will display a file in read-only mode. You can then search for text strings such as QM.

I'm using Win98SE so I can't say whether this approach works in Win XP. You might need a different hex editor, eg HexEdit.

- Franc Zabkar