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Communication via Ethernet CPs in S7 Stations
25
SIMATIC NET NCM S7 for Industrial Ethernet
Release 6/2003
C79000–G8976–C129–07
1.4 S7 Communication on Industrial Ethernet
Application
S7 communication via Industrial Ethernet allows program-controlled
communication using communication SFBs/FBs via configured S7 connections.
Per job, up to 64 Kbytes of user data can be transmitted.
The Ethernet CP acts as an “S7 communication relay” by passing on the S7
functions via Industrial Ethernet (see /8/). Depending on the configuration of the
Ethernet CP, data transfer is on the basis of the ISO transport or the ISO-on-TCP
protocol (TCP/IP with RFC 1006).
From the perspective of the user, S7 communication is identical over PROFIBUS
and Industrial Ethernet.
Nodes
Two situations can occur depending on device type and plant configuration:
S Client and server functionality at both ends
S7 connections can be operated between the following nodes with the entire
functionality of S7 communication:
– between S7 stations S7-300 and S7-400;
– between S7 stations and PC/PG stations with an Ethernet CP.
Ethernet
PC/PG with Ethernet CP
S7 – 400
S7 – 300
Ethernet CP
M7
* only TCP/IP
S7 – 300 / 400
Ethernet CP
PUT / GET
BSEND / BRECV
USEND / URECV
WAN *
Figure 1-3 Nodes Communicating on S7 Connections over Industrial Ethernet
- Release 6/2003 1
- C79000–G8976–C129–07 1
- Audience 6
- Scope of this Manual 6
- Symbols Used in this Manual 7
- Conventions 7
- Contents 11
- Stations 15
- 1.1 Industrial Ethernet 16
- Configuration and Diagnostics 20
- Programmed Connections 20
- Operator 22
- Industrial Ethernet 24
- Ethernet CP 26
- Configuring S7 Connections 27
- Interface) 29
- IP (Internet Protocol) 30
- SEND/RECEIVE 30
- Interface 30
- Connection Types 32
- SIMATIC S5 32
- Configuring 33
- Networking in a Multiproject 33
- Variants 34
- Configuration of the System 35
- (Sub)Project 38
- Projects 41
- (TCP/IP) 43
- Ethernet Option 46
- 2.2 Procedure 47
- Procedure 48
- Subnet Attachment 52
- Graphic Overview in NetPro 55
- Overview in Table Form 56
- S Send Keepalives for 60
- S Multiplex OP Connections / 60
- Diagnostics Tab 61
- Addressing Tab 61
- IP Access Protection Tab 62
- IP Configuration Tab 63
- S Set IP address in the 63
- S Obtain an IP address from a 63
- S Set IP address in the user 64
- S Set IP address using a 64
- Setting Up Connections 68
- Latest CPs) 69
- Requirements 70
- Alternative Procedure 72
- Principle 74
- Type of Interface 74
- Functions (FCs) 78
- Amounts of Data 78
- Purpose of the FCs 79
- 3.4 Additional Information 84
- Known Problems 85
- 4.1 Procedure 88
- 4.3 Connections 91
- Tasks of the Ethernet CP 92
- 4.3.1 New Connection 94
- Unspecified Connections 97
- 4.3.3 Further Functions 99
- Overview 100
- Display (Example) 102
- Introduction 103
- Opening the Dialog 103
- General Tab 104
- Address Parameters 106
- TSAP Format 107
- Local and Remote TSAPs 107
- Addresses Tab 107
- Default TSAPs 108
- Dynamics Tab 109
- Overview Tab 111
- Figure 4-17 125
- Application 133
- Figure 4-23 136
- 4.7.5 Free UDP Connection 138
- 4.8 FETCH/WRITE Mode 139
- “S7 Addressing Mode” Option 141
- System Memory 141
- Links to Other Systems 141
- Routing to Distribute Load 143
- Parameter Description 144
- 5.1 Overview 146
- 5.2 Procedure 148
- 5.3 Configuration Data Block 149
- (CP Networking) 150
- Connection ID 152
- Structure 153
- S S7-400: 1,2 through 64 153
- S S7-300: 1,2 through 16 153
- Usable Subfields 153
- 5.6 Subfield types 159
- S Possible values: 160
- S7 Ethernet CPs 163
- Block Library 164
- Evaluating Status Codes 169
- Working with the Job Header 173
- Meaning of the Block 174
- How the Block Works 175
- S Note the block type: 179
- S Note on the S7-400: 179
- Condition Codes 179
- DONE MeaningSTATUSERROR 181
- Example of AG_SEND 182
- NDR MeaningSTATUSERROR 190
- Caution when Configuring 191
- 6.4.1 FC7 AG_LOCK 193
- 6.4.2 FC8 AG_UNLOCK 195
- Connections 197
- How It Works 198
- NCM S7 Diagnostics 205
- 7.1 Overview 206
- Functions 207
- Mode-Dependent Functions 207
- Installation 208
- Operation 209
- 7.2.2 General Menu Commands 210
- S Dialog update time 211
- 7.3 Starting Diagnostics 212
- 7.3.4 Using a Gateway 215
- Case b: Several Gateways 216
- 7.4 How to Use Diagnostics 219
- Firmware Loader 225
- 8.1 Application 226
- 8.2 Loading Firmware 227
- References 229
- Order Numbers 232
- Glossary 233
- B.1 General Section 234
- B.2 Industrial Ethernet 238
- B.3 PROFInet 240
- Linking to Other Systems with 243
- FETCH/WRITE 243
- “Parameter Values“ 244
- Parameter Values 246
- PI/PQ C T 247
- Document History 249
- A&D Technical Support 254
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