Siemens Simatic S7-300 CPU 31xC Series User Manual

Index
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
Index-3
I
IE/PB Link, 4-49, 17
Industrial Ethernet, 4-29, 4-46
Inscription labels, 5-2
installation
arranging modules, 4-7
grounded reference potential, 4-16
horizontal, 4-3
ungrounded reference potential, 4-17
vertical, 4-3
Installation
in cabinets, 4-11
Installing
the modules, 9-9
Installing EMC plants, A-3
Interconnection, 4-48
Interface module, 4-47
Interface modules
Connecting cables, 4-8
Interfaces
MPI, 4-33
PtP interface, 4-62
Which devices can I connect to
which interface?, 4-33
Interferences
electromagnetic, A-3
Interrupt
on the DP master, 10-25
IO controller, 4-46
IO device, 4-46
IO supervisor, 4-46
IO system, 4-46
L
Labeling strips
Assignment to modules, 6-11
inserting, 6-11
Lightning protection equipotential bonding, A-21
Lightning protection zone concept, A-19
Load circuit
Ground, 4-23
Load current
determining, 4-26
Load power supply
from PS 307, 4-27
Load voltage
Connecting the reference potential, 4-23
Local equipotential bonding, A-22
M
Mains
grounded, 4-15
Mains voltage
Selecting the mains voltage, 6-4
Mains voltage selector switch, 6-4
Material
required, 5-3
Mode selector switch
CPU memory reset with, 8-10
Modifying
of variables, 10-2
module, 4-47
Module
Arrangement, 4-7, 4-9
Assembly dimensions, 4-4
common potential, 4-19
installing, 9-9
Installing, 5-8
isolated, 4-19
labeling, 6-11
removing, 9-7
replacing, 9-6
Start addresses, 7-1
Module diagnostics, 10-30
Module replacement
Reaction of the S7-300, 9-10
Rules, 9-6
Monitor
of variables, 10-2
Monitoring and modifying tags
Creating a tag table, 8-19
Monitoring and modifying variable
establishing a connection to the CPU, 8-21
Modifying outputs in CPU STOP mode, 8-22
modifying variables, 8-20
Monitor variable, 8-20
opening the VAT, 8-21
Saving the variable table, 8-21
setting the trigger points, 8-20
Mounting rail
connecting the protective conductor, 6-3
Fixing screws, 5-5
Ground conductor, 5-4
Length, 4-4
mounting holes, 5-5
Preparing, 5-4
MPI, 4-28, 4-33
Maximum number of nodes, 4-31
Maximum transmission rate, 4-30

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)