Fanuc 0T-B RS232 Chip

[PANagel1982]

Hello...

I have a Nakamura TW20 with a Fanuc 0T-B Control

The communication work well until now:
I can send from the Machine to the Computer.



But when i want to send a program back to the machine i got an error 86.
I try to slow down the speed from 4800 to 2400 baud. After that i start the transmission. LSK is flashing, the computer is sending the file but the Machine doesn’t receive it.

I try even to slow down to 300 baud: same issue.

After change back to 4800 baud, error 86 doesn’t show up anymore….

I believe the communication chip is damaged.

Does anyone know what chip is the RS232 chip?


Also I try to change from port 0 (M5) to port 2 (M74)
When punch out the parameter I just receive
N00000 P 00000000
N00000 P 00000000
N00000 P 00000000


Greetings from Germany.

Peter

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[zavateandu]

as far as i know

-75189AN - http://ro.farnell.com/texas-instrume...-5v/dp/1470432

-75188N - SN75188N - TEXAS INSTRUMENTS - Line Driver RS232, 4 Drivers, 7.5V-15V supply, DIP-14 | Farnell element14