上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
- 42 - Specialized, Concentrated, Focused
3.5
Port Polarity Adjustment
The polarity of input/ output ports in software is specified in terms of the switch type: the polarity of
normally closed-
type switch is ―P‖; the polarity of normally open-type switch is ―N‖. In the software
interface, the ports with preceding filled dot
are input ports, while the ones with hollow point
are
output ports.
After wiring and power on, the red dots in front of input ports like zero signals of axes, E-stop signal,
program start, program stop, and tool presetter indicate they are invalid currently, otherwise, the
electrical circuit and signal polarity should be checked. If there is no problem with the electrical circuit,
change the polarity of corresponding port so as to show red dots in front of the above-mentioned input
ports.
If the dot in front of signal still does not change after polarity change, examine whether the port is
damaged on the terminal board.
The method of modifying polarity is: press ―System‖ function button to enter the default screen [Port
(A)] of [System] function area, and then use the up and down direction keys to select the I/O ports to be
modified, and then press F1 to validate the port modification instantly.
[Port (A)] screen is shown in Fig. 3-13, and the following function screens need password before
operation, such as [Test On], [Test Off], [Cancel Test], and [Modify Polarity].
Fig. 3-13 Ports screen
[Modify Polarity]
The shortcut key is F1, which is only available on [Port (A)] screen.
Press F1 to modify the port polarity (N / P).
The polarities of ―feedrate override‖, ―spindle override‖, ―mode switch‖, ―handwheel‖ and ―encoder
zer
o‖ should be ―N‖.
Except the special definition, the polarities of output ports are generally ―N‖.
[Test On], [Test Off]
The shortcut keys are F2 and F3 respectively, which are only available on [Port (A)] screen.
Port polarity (N and P)
Port definition description
Input port name (the same
with that of terminal board)
