Siemens SIMATIC S5-100U, System Manual

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S5-100U Start-up and Program Tests
4.3 Loading the Program into the Programmable Controller
You can load a program from a connected programmer (online operation). When you load a
program, it is transferred to the programmable controller's program memory. There are specific
instructions in your programmer manual for doing this.
You can also load your program from a memory submodule, but only valid blocks can be loaded.
See section 7.5.2. The different memory submodules you can use are listed in Appendix D.
Section 4.3 describes how you can load a program from a memory submodule.
Warning
You can connect or disconnect memory submodules only in the Power OFF mode.
Loading the Program Automatically
Automatic loading copies the program from a memory submodule into the program memory of the
CPU. You can only load valid blocks. See section 7.5.2.
Figure 4-2 shows how a program can be loaded automatically.
Figure 4-2. Procedure for Loading the Program Automatically
Program is loaded.
Plug memory submodule
into the CPU.
Program is in the
S5-100U.
The CPU 102 is in
the Normal Mode.
Perform error diagnostics
(see section 5.1).
Error
No battery is installed
(yellow LED lights).
Switch the S5-100U off.
PLC overall reset
Switch the S5-100U on.
Red LED flashes.
CPU 100: red LED lights;
CPU 102/103: red LED flickers.
EWA 4NEB 812 6120-02b
4-5