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Siemens CPU 314 Hardware And Installation Guide
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S7-300 Automat
ion System, Hardware and Install
ation: CPU 31xC and CPU 31x
A5E00105492-03
5-21
([DPSOH&38[&
The f
igure belo
w sho
ws a s
am
ple conf
iguration
of a C
PU 31x
C with
isola
ted
modules
. The c
onnection
is
autom
aticall
y generat
ed fo
r the C
PU 31xC (
1).
N
L1
L+
M
PS
S7-300
CPU
µP
L1
N
M
external
L+
U
internal
M
internal
Data
L1
N
DI
DO
PE
Ground bus
in cabinet
AC 230 V load
power supply
DC 24 V load power supply
1
Figure 5-9
Configurati
on with isolated mo
dules
46
48
Table of Contents
Default Chapter
1
Table of Contents
1
S7-300 Automation System
13
Hardware and Installation
13
CPU 31Xc and CPU 31X
13
Installation Manual
13
Information Landscape of S7-300
13
Additional Documentation
14
SIMATIC Technical Support
15
Influence of the Ambient Conditions on the Automation System (AS)
17
Communication between Sensors/Actuators and the Automation System
18
Communication
19
Installing an S7 System
21
Modules in an S7-300
23
Components of an S7-300:
24
Horizontal and Vertical Installation
29
Rails - Overview
30
Shielding Contact Element
31
Assembly
32
Arranging Modules on Multiple Racks
34
Full Assembly Using Racks
36
Types of Cabinet
39
Selection and Installation of Cabinets
41
General Rules and Regulations for S7-300 Operation
43
CPU with Grounded Reference Potential (as Supplied)
44
Creating an Ungrounded Reference Potential on a CPU
45
Configuration with Isolated Modules
47
Configuration with Non-Isolated Modules
48
Grounding Measures
49
Connection of the Load Voltage Reference Potential
51
Overview: Grounding
52
Grounding Concept for the S7-300 (Excluding CPU 31Xc)
53
Characteristics of Load Power Supply Units
54
Example: S7-300 with Load Power Supply from PS 307
55
Nodes on the Subnet
58
MPI/PROFIBUS DP Addresses
59
MPI Addresses of Cps/Fms in an S7-300
60
Interfaces
61
Possible Interface Operating Modes for CPU 317-2 DP
62
The Following Devices May be Connected
63
Available Bus Cables
64
Marginal Conditions for Wiring Interior Bus Cables
65
RS 485 Repeater
66
Cable Length
67
Stub Cable Lengths Per Segment
68
Example of an MPI Subnet
69
Example: Maximum Distances in the MPI Subnet
70
Example of a PROFIBUS Subnet
71
Example: CPU 314C-2 DP as MPI and PROFIBUS Nodes
72
Example of PG Access Across Network Boundaries (Routing)
73
Module Accessories
78
Installation Tools and Materials
79
Holes for Mounting the 2 M Rail
80
Mounting Holes for Rails
81
Free Space Required for an S7-300 Installation
82
Slot Numbers for S7 Modules
85
Inserting Slot Numbers in Modules
86
Wiring
87
Conditions for Connecting the PS and CPU
88
Wiring Conditions for Front Connectors
89
Connecting the Protective Conductor to the Rail
90
Setting the Mains Voltage Selector Switch for the PS 307
91
Wiring the Power Supply Module and the CPU
93
Assignment of Front Connectors to Modules
94
Move the Front Connector into Wiring Position
96
Wiring the Front Connector
97
Slide the Labeled Strips into the Front Panel
99
Assigning the Shielding Diameter to Shielding Terminals
100
Shielding Contact Element Underneath Two Signal Modules
101
Connecting 2-Wire Cables to the Shielding Contact Element
102
Bus Connector: Enabled and Disabled Terminating Resistor
104
Addressing
105
S7-300 Slots and the Associated Module Start Addresses
106
Addresses of the I/O of Digital Modules
108
I/O Addresses of a Digital Module in Slot 4
109
I/O Addresses of an Analog Module in Slot 4
110
Integrated Inputs and Outputs on the CPU 313C
111
Consistent Data
112
Recommended Commissioning Procedure - Part I: Hardware
114
Recommended Commissioning Procedure - Part II: Software
115
Configuring
116
Connecting a PG to an S7-300
118
Connecting a PG to Multiple S7-300 Plcs
119
Connecting a PG to a Subnet
120
PG Connected to an Ungrounded S7-300
121
Insert the Micro Memory Card into the CPU
123
In this Chapter
125
Using the Mode Selector Switch to Reset the Memory
126
Operations in the CPU During a Memory Reset
127
Software Requirements
134
DP Address Areas of the Cpus
135
Commissioning the CPU as DP Master
137
Commissioning the CPU as DP Slave
140
Intermediate Memory in a DP CPU Operating as a DP Slave
141
Direct Data Exchange
144
Direct Data Exchange with Cpus 31X-2 Dp/31Xc-2 DP
145
Back-Up of Operating System on MMC
148
Updating the Operating System
149
S7-300 Modules
150
Wiring
150
Unlocking the Front Connector and Removing the Module
151
Removing the Front Connector Coding Pin
152
Installing a New Module
153
Module Replacement
154
Location of Fuses in the Digital Output Module 120/230 VAC
156
Principle of Forcing in S7-300 Cpus
159
Diagnostics with Leds
163
Evaluation of the SF LED (Software Error)
164
Addressing
165
The BUSF, BUSF1 and BUSF2 Leds
166
The BUSF LED Lights up
167
Diagnostics with CPU 31X-2
168
Diagnostic Addresses for DP Masters and DP Slaves
169
Event Recognition by Cpus 31X-2 as the DP Master
170
Diagnostic Address for the Receiving Station with Direct Data Exchange
171
Reading Slave Diagnostic Data
172
Diagnostic Addresses for DP Masters and DP Slaves
175
Event Recognition by Cpus 31X-2 Acting as the DP Slave
176
Interrupts on the DP Master
177
Structure of Slave Diagnostic Data
178
Structure of Station Status 1 (Byte 0)
179
Structure of Station Status 3 (Byte 2)
180
Structure of the ID-Specific Diagnostics for CPU 31X-2
181
Structure of the Module Status
182
Structure of the Interrupt Status
183
Bytes Y+4 to Y+7 for a Diagnostic Interrupt (Operating Status Change by Intelligent Slave)
184
Bytes Y+4 to Y+7 for the Diagnostic Interrupt (SFB 75)
185
Starting the System after Specific Events
187
Installation
188
Mains Voltage
188
Possible Paths of Electromagnetic Interference
189
Coupling Mechanisms
190
EMC Compatible Installation of PLC
193
Example of an EMC Compatible Cabinet Installation
195
Key to Example 1
196
Example of EMC Compatible Wall-Mounting
197
Equipotential Bonding
199
Equipotential Bonding
200
Routing Cables Inside Buildings
201
Lightning and Surge Voltage Protection
203
Lightning Protection Zone Concept
204
Lightning Protection Zones of a Building
205
High-Voltage Protection of Cables with Surge Voltage Protection Components
207
Surge Voltage Protection Components for Lightning Protection Zones 1 <-> 2
209
Surge Voltage Protection Components for Lightning Protection Zones 2 <-> 3
210
Sample Circuit for Networked S7-300 Plcs
211
Example of a Lightning-Protected Structure (Key to Figure Above)
212
EMERGENCY-OFF Relay Contact in the Output Circuit
213
Circuit for Coils Operated with DC Voltage
214
Wiring
233
Addressing
233
Commissioning
233
Commissioning
236
Other manuals for Siemens CPU 314
Technical Data Manual
252 pages
Reference Manual
192 pages
4
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Siemens CPU 314 Specifications
General
Brand
Siemens
Model
CPU 314
Category
Controller
Language
English
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