Siemens Simatic S7-300 CPU 31xC Series User Manual

Commissioning
8.4 Commissioning the Modules
S7-300, CPU 31xC and CPU 31x: Installation
8-14 Operating Instructions, Edition 08/2004, A5E00105492-05
See also
Configuring and commissioning the PROFINET IO system (Page 8-35)
8.4.5.2 Connecting the PG to a node
Requirements
The PG must be equipped with an integrated MPI interface or an MPI card in order to
connect it via MPI.
Connecting a PG to the integrated MPI interface of the CPU
1. Connect the PG to the MPI interface of your CPU by means of a PG patch cable (1). You
can use a self-made PROFIBUS bus cable with bus connectors. The figure below
illustrates the connection between the PG and the CPU
1
3*
36
03,
&38 60
Procedure for PROFIBUS DP
The procedure is basically the same, if the CPU interface is set to PROFIBUS DP mode

Siemens Simatic S7-300 CPU 31xC Series Specifications

General

Series	S7-300 CPU 31xC
Power Supply	24 V DC
Communication Interfaces	MPI, PROFIBUS DP
Programming Languages	LAD, STL, FBD, SCL
Operating Temperature	0°C to +60°C
Memory	48 KB - 512 KB
Dimensions	40 x 125 x 130 mm (varies by model)