Specialized Concentrated Focused
Machine Tool Debugging
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Fig. 5-1 IO ports window
3) Alter the input port polarity in the software in terms of such buttons selected as origin switch and
E-STOP button: the polarity of NO input ports is N; the polarity of NC input ports is P. The way to
alter polarity in the plasma cutting software NcEditor is as follows: select the port to be modified its
polarity, and then click the manipulation button [ConvertPol]. The password to modify polarity is
ncstudio. After all the polarity modification has been finished, shut down and restart NcEditor to
validate polarity modification.
5.2.2. Ports Diagnosis of Terminal Board
1) Electrify the electrical box. At this time, the dots in front of such input signals as zero signals of the
two axes, E-STOP signal and program start/stop signals should be in red, indicating all these
signals are invalid. Otherwise, it is necessary to check the correctness of electrical circuitry and
signals polarity. If electrical circuitry is correct, alter the corresponding signal polarity to ensure the
dots in front of the above-mentioned signals show in red.
2) Press the button [Start], and observe whether the dot color
of ―program start‖ signal changes.
When the button is being pressed, the dot color should show in green, and in red after released. If
there is no change to the dot color, please turn to 5.1.3 above to check whether the LED on the
terminal board works normally when the button is being pressed. If the terminal board works
normally, it indicates that the software has not collected the signals from the terminal board.
Examine the connection of cable DB37M/F and DB50M/F with the control card and the terminal
board. Similar method can be taken to examine program stop signal and emergency stop signal.
3) In accordance with the above method, open IOPorts window and simulate to trigger the zero
signals, observing whether the dot in front of the zero signal turns into green when an origin button
is being triggered. Be sure that both the origin signals of X and Y axes can be gotten.
