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Chapter 2 Definition and Connection of Interface Signal
381
Ⅲ
Connection
The input interface signals defined by PLC of GSK980TDi
/
GSK980TDi-V system involve XDEC,
ZDEC, ESP, ST, SP/SAGT, PRES, DITW, DIQP, T01
~
T08, TCP and so on.
2.8.2 Output Signal
The output signal is used for the machine relay and indicator. When the output is enabled, the
output state of its corresponding Y address is 1, and its output signal potential is 0V. When the output
is disabled, the output state of its corresponding Y address is 0, this output signal represents as
high-impedance state. The digital value output of I/O interfaces are owned the same structure, refer
to the following figure:
Fig. 2-22 Circuit for digital volume output module
Its typical application is as follows:
z
To drive LED
A serial resistance is needed to limit the current (usually 10mA) that goes through the LED by
using output to drive LED, which is shown in Fig. 2-23:
Fig. 2-23
z
To drive filament indicator
An external preheat resistance is needed to decrease the current impact at power on by using
output to drive filament indicator, and this resistance value should be within a range that the indicator
cannot be lighted up as shown in Fig. 2-24:
Содержание 980TDi
Страница 17: ...Official GSK Agents in South Africa Tel 27 11 626 2720 design efamatic com 1 Programming I Programming...
Страница 225: ...Official GSK Agents in South Africa Tel 27 11 626 2720 design efamatic com 209 Operation II Operation...
Страница 379: ...Official GSK Agents in South Africa Tel 27 11 626 2720 design efamatic com 363 Connection III Connection...
Страница 539: ...Official GSK Agents in South Africa Tel 27 11 626 2720 design efamatic com 523 IV Appendix IV Appendix...