Start-Up and Program Tests
S5-90U/S5-95U
4.3
Loading the Program into the PLC
The STEP 5 program is loaded into the RAM of the PLC. It includes all OBs, PBs, FBs, SBs and
DBs, including DB1. The program can be loaded from a programmer connected to the PLC (on-line
mode).
Please refer to your programmer's Manual for a detailed description. In the following, loading from a
memory submodule will be described.
!
Warning
Memory submodules may be inserted or withdrawn only in the "POWER OFF" mode.
4.3.1
Loading the Program Automatically
You can use various memory submodules with the S5-90U and S5-95U . Appendix E contains a list
of the submodules available.
Figure 4-3. Procedure for Automatically Loading a Program
Yes
Disconnect S5-90U from power supply.
Switch off S5-95U.
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
No battery is inserted.
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a
Battery inserted and
overall reset of PLC.
Insert memory submodule into
the PLC.
Connect S5-90U to supply mains.
Switch on S5-95U.
a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a
Is red LED lit?
No
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a
Is red LED flashing?
No
Yes
No valid program on memory
submodule.
Carry out error diagnostics
(see Chapter 5).
Red LED is flickering while
program is being loaded.
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a
Program loaded in PLC.
4-8
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