Table of Contents
Advertisement
3.6
Operating mode buttons
You use the operating mode buttons to set the operating mode of the CPU.
The following table shows the meaning of the corresponding operation of the operating
mode buttons.
Table 3-6 Meaning of the operating mode buttons
Operation of the operating mode but
tons
RUN
STOP
MRES
1. Press the operating mode button
STOP.
Result: The RUN/STOP LED lights up
yellow.
2. Press the operating mode button
STOP until the RUN/STOP LED lights
up for the 2nd time and remains con
tinuously lit (this takes three
seconds). After this, release the but
ton.
3. Press the operating mode button
STOP again within the next three
seconds.
CPU 1511-1 PN (6ES7511-1AL03-0AB0)
Equipment Manual, 11/2022, A5E40869673-AC
Meaning
RUN mode
STOP mode
Manual memory reset
(with inserted SIMATIC
memory card)
or
Reset to factory settings
(without inserted SIMATIC
memory card):
3.6 Operating mode buttons
Explanation
The CPU is executing the user program.
The user program is not being executed. (STOP
ACTIVE LED lights up).
The CPU executes memory reset.
or
The CPU is reset to its factory settings.
You can find additional information in the
S7‑1500/ET 200MP system manual.
(https://support.industry.siemens.
com/cs/ww/den/view/59191792)
Product overview
29
Advertisement
Table of Contents
