• Data rate: 9600 baud (depending upon the capability of the CNC)
• Data type: ASCII
• Parity: Even
• Word Length 7
• Stop bits: 1
• Handshaking:
  Both NoWait (if like FANUC and Yasnac CNC’s the RTS signal goes on at the beginning of any data transfer, and off at the completion. If not must choose the handshaking depending upon CNC. For example, XON/XOFF wait is normally used with controllers that emulate EIA RS-491 level II, whereas RTS/CTS is used with level 1.)

Note: In almost all cases ASCII, Even and 7 bits should be selected on the DNC side even if the CNC calls for ASCII, No Parity, 8 bits. (Cincinatti's and Citizen's are this way, for example.)