In order to establish RS-232 Communication with a CNC Controller the following must be known.
What COM PORT at the PC is the cable connected to? COM_________
Is the CABLE correctly configured for the machine? Yes _______ No_______
Does the machine control use hardware or software flow control? Software Xon - Xoff / Hardware RTS-CTS
(DTR/DSR is a hardware handshake less-commonly used, however, it is used on some older machines and BTR units. This must be active to use this hardware handshake.)
What is the BAUD RATE set at your machine tool? Baud_______________
What DATA BIT value is set at your machine? Data_______________
What PARITY is your machine tool set to? Parity_______________
What STOP BITS value is your machine set to? Stop________________
Are the above baud rate , stop bits and parity set up in the editor ? Yes / No
Are the above baud rate , stop bits and parity set up in the windows device manager ? Yes / No
Are there any beginning, end or end of line codes that the machine controller requires ?
% percent symbols are a typical start and end code. ; semicolon symbols are common end of line codes.
%
G0 G90 G40 G20;
G00 X0.0 Y0.0;
G00 X10.0 Y10.0;
M02;
%
Start Code ___________
End Code ___________
End Of Line Code ___________