Sample Configuration - Siemens SIMATIC S7-300 Series Reference Manual

CPU Function, depending on CPU and STEP 7 Version
S7-300
S7-300
OP 25
Figure 4-1

Sample Configuration

After the CPUs have been swapped, you must proceed as follows (based on the
above example):
S Replace the CPU 316 with the CPU 318-2 in the STEP 7 project.
S Reconfigure the operator panel/programming device. That means: Reassign the
controls and start address (= MPI address of CPU 318-2 and the respective FM
slot)
S Reconfigure the configuration data for the FM/CP to be loaded onto the CPU.
This is necessary to ensure that the FM/CP in this configuration remain accessible
to the operator panel/programming device.
Inserting and Removing a Memory Card (FEPROM)
If you remove a Memory Card and insert a card in with identical content in POWER
OFF state (CPU is not buffered), the result after POWER ON is:
The CPU 318-2 goes into STOP mode and
request a memory reset.
4-4
PG
S7-300
RS 485
repeater
PG
CPU 318-2
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
The CPU 316 is replaced
with a CPU 318-2
S7-300 with CPU 316
OP 25
FM FM
CPUs 312IFM to 316-2DP
The CPU switches to the mode it was in
prior to POWER OFF, i.e. RUN or STOP.
FM
A5E00111190-01