RS-232 Communications Checklist
Introduction
This topic explains the setup required for RS-232 communication.
Communications Checklist
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 ?
Example
% 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 ___________