About the PS4-200
Compact PLC
14
04/99 AWB 27-1184 GB
,
Operating mode selector switch/
reset button
You can select the “Halt” (stop), “Run” and
“Run M-Reset” modes with the operating mode
selector switch. The selected mode is activated
when you press the Reset button. The operating
states are described in detail in the chapter
“Operation”.
Plug connector for local expansion module
The plug connector provides the interface for
connecting the LE4-... local expansion modules
Real-time clock
The PLC is equipped with a battery-backed, real-
time clock. It facilitates the time-controlled switching
of machines and equipment. You can change
between summer and winter time in the user
program. A function block in the user program can be
used to address and scan the real-time clock.
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