Acramatic
Amada
Anilam
Bosch
Boss
DeltaDynaPath
Fagor
Fanuc
Heidenhain

. . . Blockwise

. . . TNC 155
. . . TNC 355
. . . TNC 335
. . . TNC 360
. . . TNC 370
. . . TNC 415
. . . TNC 425
. . . TNC 2500
Hinumerik
Hitachi
Mazak
Mitsubishi
Okuma
Sinumerik
Traub
Yasnac

CNC / DNC Settings for Heidenhain TNC355

Parameter Value Comments  
 
MP232 0  
MP71 515  
MP222 104  
    in the DNC software Set Baud rate 2400 -7 DataBits -Even -2 StopBits
   

In the DNC software select RTS/CTS flow control

DNC Software should insert STX and ETX codes into the transmit data - For example with easyDnc 4.0 this is acheived in the DNC Setup window by selecting 'Advanced' and select these options from the drop-lists.
ASCII Start Code = STX (02)
ASCII End Code = ETX (03)

Cable shown here works with xOn/xOff (DC1/DC3) flow control and RTS/CTS (Hardware flow control so should work in most cases.

But if you're sure your CNC does not use any flow control - or requires only xOn/xOff then you may use the the simpler 3 wire cable. Diagram here.

RS232 Cable.
9pin computer to 25pin CNC