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• PSS CPU, PSS1 CPU, PSS SF CPU, PSS1 SF CPU: Slot for the
standard section's program memory cartridge.
The CPU is installed on a designated slot on the module rack. Various
power supplies are available.
Fig. 1: Front view of the PSS CPU, PSS1 CPU, PSS SF CPU and PSS1 SF CPU
Operating Manual
1
ST
RUN
2
RUN
FS
POWER
3
AUTO PG
SPS
ST
PG
4
5
RUN
FS
STOP
F-STACK
6
7
8
1: Four-digit display
2: LEDs for operating mode and mains
voltage
3: Three-position switch for selecting the
standard section's operating mode
4: Button for scrolling the error stack
5: Two-position switch for selecting the
failsafe section's operating mode
6: Slot for the standard section's
program memory cartridge
7: RS 485 programming interface
8: RS 232 user interface
3
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