Okuma Alarm-D 4218 Communication procedure Illegal text
A text with a transmission error is received for consecutive RC5 + 1 times. (receiving station)
bit5->RS232C framing error
bit4->RS232C overrun error
bit3->RS232C parity error
bit0->Transparent mode error
Probable Faulty Locations
1)Defective RS232C interface
2)Defective hardware or software of the host computer
3)Mismatch between the actual communication line specification (baud rate, code configuration, etc.) and the communication set by the communication parameters.
No operations related with this type of alarm at the CNC
Measures to Take
1)Check the hardware and software of the host computer.
2)Change the FRP board or RPP board channel to other channel by setting proper data at communication parameter.
Change the connection of the connector to the proper position,accordingly.
3)Check the following communication specifications between the actual communication line specification and the communication parameters:
RS232C interface channel being used
Number of stop bits
Use of WACK/TTD control
Effective/ineffective transparent mode