Acramatic
Amada
Anilam
Bosch
Boss
DeltaDynaPath
Fagor
Fanuc
Heidenhain

. . . Blockwise
. . . TNC 145

. . . TNC 150
. . . TNC 155
. . . TNC 355
. . . TNC 415
. . . TNC 425
. . . TNC 2500
Hinumerik
Hitachi
Mazak
Mitsubishi
Okuma
Sinumerik
Traub
Yasnac

CNC / DNC Settings for Heidenhain TNC 150

Parameter Value Comments  
 
MP92 1 Select Multi Func.
MP71 3  
BaudRate 2400 (Same as in the DNC software )
     
   

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 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