Siemens CPU 312C Hardware And Installation Guide

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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
4 A5E00105492-03
Monitoring
of variables 11-1
monitoring and controlling variables
Establishing a connection to the CPU
9-21
Opening the VAT 9-20
Saving the VAT 9-20
Monitoring and controlling variables
monitoring variables 9-19
Mountable shielding terminals 5-5
MPI 13-9
maximum baud rate 5-32
maximum possible number of nodes
5-32
MPI Subnet 5-30
MPI address
default 5-33
highest 5-33
recommendations 5-34
rules 5-33
MPI and PROFIBUS subnet 5-46
MPI interface 5-35
MPI subnet
example 5-43
maximum distances 5-44
segment 5-41
terminating resistor 5-48
1
Nesting depth 13-9
Noise
electromagnetic 12-3
Non-isolated 13-9
2
OB 13-10
OB priority 13-10
Open components 6-1
Operating mode 13-10
Operating system
back-up 10-2
back-up on Memory Card 10-2
back-up on Micro Memory Card 10-2
CPU 13-3
updating 10-3
Organization Blocks 13-10
Outdoor routing of cables 12-17
3
Parameters 13-10
Module 13-9
PG
access across network boundaries 5-47
connecting 9-6
ungrounded installation 9-9
via stub cable to subnet 9-8
Point-to-Point
maximum baud rate 5-32
maximum possible number of nodes
5-32
Point-to-point communication 5-31
Potential differences 5-24, 12-13
Power on
requirements 9-12
Power supply
grounded 5-16
Power supply module
selecting mains voltage 7-5
power up
initial 9-12
priority
OB 13-10
Priority class 13-11
Process Image 13-11
process interrupt 13-11
Product version 13-11
PROFIBUS bus cable 5-38
PROFIBUS address
recommendation 5-34
PROFIBUS and MPI subnet 5-46
PROFIBUS bus cable
properties 5-38
PROFIBUS DP 13-11
commissioning 9-22
Direct data exchange 9-32
maximum baud rate 5-32
maximum possible number of nodes
5-32
PROFIBUS DP address
highest 5-33
rules 5-33
PROFIBUS DP addresses
default 5-33
PROFIBUS DP interface 5-36
PROFIBUS DP subnet 5-30
PROFIBUS subnet
cable lengths 5-41
example 5-45
PROFIBUS Terminator 5-49
Protect digital output modules from
inductive surge 12-27
protective conductor
connecting to the rail 7-4
Protective ground
measures 5-23
Protective measures
for overall system 5-17
PtP interface 5-36
Purpose of this documentation 1-1

Siemens CPU 312C Specifications

General

Brand	Siemens
Model	CPU 312C
Category	Processor
Language	English