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TB130 Rev1 PLC Modification for Atrump Lube Pumps
Overview
This document describes how to modify the M400 PLC program to run the lube pump at all times unless
Emergency Stop is pressed This is necessary because the Chen Ying CESD pumps use an electronic timer
that resets each time lube power is switched off If no job runs as long as the interval set on the pump usually
15 or 20 minutes then the pump will never cycle and the machine will run without lube Â
Changing the PLC program Â
1 Exit to the DOS prompt Ctrl + Alt + X Â
2 Change to the PLC directory C \CNC7> CD \PLC Â
3 Copy the PLC source file to a new file named M400L SRC
C \PLC> COPY M400 SRC M400L SRC
4 Edit the new file C \PLC> EDIT M400L SRC Â
5 Change the header comments as follows Â
; * * * * * * * * * * * * * * * * * * * * * * * * * * *
; * File M400L src
; * Purpose PLC program for M400 controls Atrump CESD lube pumps
; * Author Keith S Dennison
; * Created 05/27/97
; * Modifications
; * 09/10/97 KSD Added Vector drive support by echoing
; * SpindleRelay and CCW_relay to
; * MEM78 and MEM79
; * 12/02/01 YOU Changed lube output to run all the time
; * unless E stop or low lube
; * * * * * * * * * * * * * * * * * * * * * * * * * * *Â
6 Scroll down until you find the following lube output line around line 254
Lube = CNC_program_running AND / Lube_low AND / E_stop Â
7 Change it to read as follows Lube = / Lube_low AND / E_stop Â
8 Save the file Alt + F
then S Â
9 Exit back to the DOS prompt Alt + F
then X Â
10 Compile the modified PLC program C \PLC> PLCCOMP /i M400L Â
PLCCOMP v 6 03 Centroid PLC compiler
Copyright 1999 Centroid Corp
Compilation successfulÂ
11 Return to the control software C \PLC> CNC7M4 Â
Testing
Release the Emergency Stop button and check to see that the lube pump has power press the Manual cycle
button on the lube pump and see if it runs Press the Emergency Stop button and check to see that the lube
pump does not have power press the Manual cycle button again and verify there is no response
Document History
Rev1 Created on 2001 12 03