Assembly of a CPU 41x–H
5.4 Mode switch
S7-400H
System Manual, 03/2012, A5E00267695-11
61
The following table explains the positions of the mode switch. If an error or a startup problem
occurs, the CPU will either change to or stay in STOP mode regardless of the position of the
mode switch.
Table 5- 4
Mode switch positions
Position
Explanations
RUN
If there is no startup problem or error and the CPU was able to switch to RUN, the CPU either
executes the user program or remains idle. The I/O can be accessed.
You can upload programs from the CPU to the programming device (CPU -> Programming
device)
You can download programs from the programming device to the CPU (Programming device ->
CPU).
STOP
The CPU does not execute the user program. The digital signal modules are disabled. The output
modules are disabled.
You can upload programs from the CPU to the programming device (CPU -> Programming
device)
You can download programs from the programming device to the CPU (Programming device ->
CPU).
MRES
(Memory reset;
Master Reset)
Momentary-on position of the toggle switch for CPU memory reset; see chapter Performing a memory
reset (Page 62).
Momentary-on position for the "Reset CPU to factory state" function; see chapter Resetting the CPU
Содержание SIMATIC S7-400H
Страница 24: ...Preface 1 1 Preface S7 400H 24 System Manual 03 2012 A5E00267695 11 ...
Страница 46: ...Getting Started 4 5 Special layout features of SIMATIC Manager S7 400H 46 System Manual 03 2012 A5E00267695 11 ...
Страница 120: ...Memory concept 10 1 Overview of the memory concept of S7 400H CPUs S7 400H 120 System Manual 03 2012 A5E00267695 11 ...
Страница 258: ...Communication 14 8 General issues regarding communication S7 400H 258 System Manual 03 2012 A5E00267695 11 ...
Страница 354: ...Synchronization modules 18 3 Selecting fiber optic cables S7 400H 354 System Manual 03 2012 A5E00267695 11 ...
Страница 434: ...Technical data 20 6 Runtimes of the FCs and FBs for redundant I Os S7 400H 434 System Manual 03 2012 A5E00267695 11 ...
Страница 460: ...Function modules and communication processors supported by the S7 400H S7 400H 460 System Manual 03 2012 A5E00267695 11 ...