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

2.4.3

Rear view of the CPU

The following figure shows the connection elements on the rear of the CPU 1518-4 PN/DP
MFP.
①
②
③
Figure 2-7
2.5

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 2- 5
Position
RUN
STOP
MRES
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Manual, 12/2017, A5E40882737-AA
Shield contact surfaces
Backplane bus connector
Fixing screws
View of the CPU 1518-4 PN/DP MFP – rear
Mode switch settings
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
2.5 Mode selector switch
35