Siemens Simatic S7-300 CPU 31xC Series User Manual

Table of contents
S7-300, CPU 31xC and CPU 31x: Installation
viii Operating Instructions, Edition 08/2004, A5E00105492-05
4.11.3.6 Connectors and other components for Ethernet...................................................................... 4-56
4.11.3.7 Example of a PROFINET Subnet ............................................................................................ 4-57
4.11.3.8 Example of a PROFINET IO system........................................................................................ 4-59
4.11.4 Routed network transitions....................................................................................................... 4-60
4.11.5 Point-to-point (PtP)................................................................................................................... 4-62
4.11.6 Actuator/sensor interface (ASI) ................................................................................................ 4-63
5 Installing ................................................................................................................................................. 5-1
5.1 Installing an S7-300 ................................................................................................................... 5-1
5.2 Installing the mounting rail ......................................................................................................... 5-3
5.3 Mounting modules onto the rail.................................................................................................. 5-7
5.4 Labeling the modules................................................................................................................. 5-9
6 Wiring ..................................................................................................................................................... 6-1
6.1 Requirements for wiring the S7-300 ..........................................................................................6-1
6.2 Bonding the Protective Conductor to the Mounting Rail ............................................................ 6-3
6.3 Adjusting the Power Supply Module to local Mains Voltage...................................................... 6-4
6.4 Wiring the Power Supply Module and the CPU ......................................................................... 6-5
6.5 Wiring Front Connectors ............................................................................................................ 6-7
6.6 Plugging the front connectors into modules............................................................................. 6-10
6.7 Labeling the module I/O ........................................................................................................... 6-11
6.8 Connecting shielded cables to the shielding contact element ................................................. 6-12
6.9 Wiring the MPI / PROFIBUS DP bus connectors..................................................................... 6-15
6.9.1 Wiring the bus connector ......................................................................................................... 6-15
6.9.2 Setting the terminating resistor on the bus connector ............................................................. 6-16
6.10 RJ45 Ethernet connector ......................................................................................................... 6-17
7 Addressing.............................................................................................................................................. 7-1
7.1 Slot-specific addressing of modules .......................................................................................... 7-1
7.2 User-specific addressing of modules .........................................................................................7-3
7.2.1 User-specific addressing of modules ......................................................................................... 7-3
7.2.2 Addressing digital modules ........................................................................................................ 7-3
7.2.3 Addressing analog modules....................................................................................................... 7-5
7.2.4 Addressing the integrated I/Os of CPU 31xC ............................................................................ 7-6
7.3 Consistent data .......................................................................................................................... 7-8
8 Commissioning ....................................................................................................................................... 8-1
8.1 Overview .................................................................................................................................... 8-1
8.2 Commissioning procedure ......................................................................................................... 8-1
8.2.1 Procedure: Commissioning the hardware.................................................................................. 8-1
8.2.2 Procedure: Software commissioning .........................................................................................8-3
8.3 Commissioning check list........................................................................................................... 8-5
8.4 Commissioning the Modules...................................................................................................... 8-7
8.4.1 Inserting/Replacing a Micro Memory Card (MMC)..................................................................... 8-7
8.4.2 Initial power on ........................................................................................................................... 8-9
8.4.3 CPU memory reset by means of mode selector switch ............................................................. 8-9
8.4.4 Formatting the Micro Memory Card (MMC) ............................................................................. 8-12
8.4.5 Connecting the programming device (PG)............................................................................... 8-13

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)