Commissioning
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
8-9
• a new MMC with content identical to the old MMC
After POWER ON, they request memory reset.
Also refer to the CPU Data Manual, Chapter Structure and Communication
Functions of CPU 31xC, section SIMATIC Micro Memory Card (MMC).
8.6 Commissioning modules
8.6.1 Connecting the PG
Prerequisite
The programming device must be equipped with an integrated MPI interface or an
MPI card in order to connect it to an MPI.
Cable length
For information on possible cable lengths refer to the Chapter Configuring; Cable
Lengths.
Connecting a PG to an S7-300
1. Connect the PG with a patch cable to the MPI of the CPU.
Alternatively, you can produce the connecting leads with PROFIBUS cable and bus
connectors yourself (refer to Chapter Wiring, Connecting Bus Connectors).
PG cable
S7-300
SF
BUSF
DC5V
FRCE
RUN
STOP
SIEMENS
PG
Figure 8-4 Connecting the PG to an S7-300