SuiteFactory™
Enterprise Class Solutions
by CAD/CAM Integration, Inc.
 

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BTR Wiring

The DNC Control connector(J2) of the BTR motherboard combines several functions:

  1. Fault tolerant RS-232 communications between the BTR and the DNC P.C. 
  2. An RS-232 input for uploading part program files from machine tool controllers that have serial output ports.
  3. 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.
  4. Connections for external Reset, Rewind, BTR/PTR switches and the I/O LED signal light.

CCI Fault Tolerant BTR wiring
Using DB25 connectors both ends

This wiring assumes the following:
At the P.C. pins 2 and 4 are outputs. Pins 3 and 5 are inputs. Pin 7 is logic ground.

PC (25 Pin socket) BTR J2 (25 Pin plug)
  1 Connect shield at this end only
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 (Off=DNC, On=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

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