HP50g serial communication with 3rd party device

[Marakasmalan]

OK, so I tried it, but no success really.

After each command (SMIT, SRECV, BUFLEN), it returns a "1" - does that indicate an error occurred or does that indicate success?

The return information is not the same after repeating the same command to the device, and furthermore it is "garbage", unintelligable an sometimes up to three characters of sensible information.

What I do not know is what Xlat need to be set to, though I played around with different settings and also dit try different values for wait, from one up to seven.

Unfortunately I do not have a 48 that I could try the same with.

ANy ideas?