'Communications Problem'

Ian England from Workshop (Contact Member) -

We recently received our OKUMA 5020 / 25LT-M. Unfortunately we cannot get the communications to function using the RS232 serial port.

So far we have been able to get the machine to send Parameter data and program data to the PC. But we cannot get the machine to receive either Parameter data or program data from the PC.

At best, the CRT display says "Filename error,

(Where the filename is PAR.MIN.)

The data in the text file on the PC (Also called PAR.MIN) has what I believe to be the correct format:-

$PAR.MIN%

Numerical parameter data

1xxx

2xxx

3xxx

End of Numeric data

%

The following parameters are set :-

1=1

34=30

44=0

54=1

Data word 1 = 10101010

Data word 12= 00001011

I enter the Device as CN0: even though CN0 is set as the default device through parameter 44 & 54.

We have tried various combinations of changes to parity, handshake, cable configuration, baud rate filename/no filename (use a.min default), etc.

I believe that the machine is receiving data but is decoding the first text string badly, that is why it displays the filename on the screen { }.

Does anyone know if there is any other additional parameter or bit to set to affect the format of the text string in the data packet. Or how the machine interprets it?

Do you use a specific program or software to communicate with the machine or can is Windows Hyperterminal OK?

Many thanks in anticipation.

Comment #1 PHIL (99.12.246.166) -

$P1234.MIN%

P1234

N

N PROGRAM INFO ETC

N

N

M30

%

OR

%P1234.MIN

N

N

N

M30

%

Comment #2 Wingrider44 from Behind Enemy Lines (Contact Member) -

"Same Problem Here"

I am having exactly the same problem. My machine doesn't wait for data and trying to sync the start of reading on CNC and sending on PC is next to impossible.

I get an RS232 channel error XXXXX. The machine will send data to the PC perfectly.

Do you know of any parameters that allows to machine to wait for data a certain length of time?

If find out anything in the meantime, I will post my findings.

Comment #3 Carlos (1) from Colombia (Contact Member) -

"Communications with OSP5020"

There is an Okuma Bulletin with all the pinouts, machine parameters, and PC parameters for RS232 communications. Unfortunately its on PDF and you can`t attach files here.

Google search "OSP 50207007000ULUM.pdf" and you will get it immediately!

Comment #4 John from Chicago (Contact Member) -

"Your Link"

Here is the link to the forum post with that attachment. If that forum allowed linked directly to the .pdf you could do that too (but I don;t know and didn't spend the time to investigate).

• Need Help with rs232 connection LB-15

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