Elements
13
04/99 AWB 27-1184 GB
Figure 3: Controls and display elements of the PS4-200
(with housing flap open)
Back-up battery
Reset button
Plug connector for local expansion modules
Operating mode selector switch
Back-up battery
The battery backs up the internal RAM and the real-
time clock.
햳
햵
햲
햴
Reset
1 Halt/Diag.
2 Run
3 Run M-Reset
+
Battery
1
2
3
S2
Diag.
Warning!
The back-up battery must only be replaced with
the power supply switched on, or data will be
lost.