BTR Wiring
Following is the typical wiring configuration for CNCs. Call CCI if you have any questions.
The DNC Control connector(J2) of the BTR motherboard combines several functions:
- Fault tolerant RS-232 communications between the BTR and the DNC P.C.
- An RS-232 input for uploading part program files from machine tool controllers that have serial output ports.
- An RS-232 output for monitoring what is going out the parallel paper tape emulation port or for fault tolerant Serial-Serial communications or for certain controller that have unusual serial tape reader inputs.
- Connections for external Reset, Rewind, BTR/PTR switches and the I/O LED signal light.
CCI Fault Tolerant BTR wiring | |
|---|---|
This wiring assumes the following: | |
| PC (25 Pin socket) | BTR J2 (25 Pin plug) |
| 2 TXD | 15 From DNC |
| 3 RXD | 17 To DNC |
| 5 CTS | 14 Ready |
| 7 Signal Ground | 16 GND |
| The following two signals are for the option to upload from CNC's that require a BTR for input but have a serial output (punch) port | |
RS-232 punch port | 2 RS-232_IN |
| Signal Ground | 7 GND |
| The following two signals are optionally used to monitor the data flowing into the N/C or CNC. It can be connected to a "dumb terminal" or fed back to a "terminal emulation" window on a P.C. | |
RS-232 monitor port | 3 RS-232_OUT |
| Signal Ground | 7 GND |
| The following signals are for optional remote switches and LED indicator | |
| SPST Toggle switch 1 | 8 DNC/PTR |
| SPST Toggle switch 2 | 22 GND |
| Pushbutton switch n/o | 9 Rewind |
| Pushbutton switch n/o | 21 Reset |
| Switch common | 18 GND |
| LED cathode | 10 Run signal |
| LED anode | 23 +5 volts |
