Rear View Of The Module; Mode Selector Switch - Siemens SIMATIC S7-1500 Manual

3.5.3

Rear view of the module

The following figure shows the connection elements on the rear of the CPU 1518‑4 PN/DP.
①
②
③
④
Figure 3-5 View of the CPU 1518‑4 PN/DP - rear
3.6

Mode selector switch

Use the mode switch to set the CPU operating mode.
The following table shows the position of the switch and the corresponding meaning.
Table 3-6 Mode switch settings
Position
RUN
STOP
MRES
CPU 1518-4 PN/DP (6ES7518-4AP00-0AB0)
Equipment Manual, 11/2022, A5E32334527-AE
Shield contact surfaces
Plug-in connection for power supply
Plug-in connection for backplane bus
Fixing screws
Meaning
RUN mode
STOP mode
Memory reset
Explanation
The CPU is executing the user program.
The user program is not being executed.
Position for CPU memory reset.
Product overview
3.6 Mode selector switch
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