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4 DP Master Mode with a PROFIBUS CP in a SIMATIC S7-300
A−82
S7-CPs for PROFIBUS Configuring and Commissioning
Release 09/2011
C79000−G8976−C181−05
4.1 Overview
Differences Compared with the Integrated DP Interface
When using the PROFIBUS CP, note the following differences compared with the
integrated DP interfaces in the CPU:
In the configuration:
− The DP master system is created when the CP is configured and not when
the CPU is configured.
In the programming:
− Reading and writing process and diagnostic data must be started using an
FC.
− In addition to the process image, memory bits or data blocks can also be
used as peripheral data areas.
In the use of the variable table VAT:
− Direct enabling of the process image PI is not supported since the outputs of
the peripheral I/Os are set by blocks (FCs).
- SIMATIC NET 1
- S7-CPs for PROFIBUS 1
- Configuring and Commissioning 1
- This manual 5
- Audience 6
- Scope of this Manual 6
- New in this version 7
- Symbols Used in this Manual 10
- Conventions 10
- SIMATIC NET glossary 11
- Contents 12
- Contents − Part B 15
- Stations 16
- 1.1 PROFIBUS 17
- 1.2.1 Type of Communication 18
- S7/C7-300 19
- S7-400/S7-400H 19
- 1) PC only as client 20
- PROFIBUS 23
- PROFIBUS CP 25
- Configuring S7 Connections 26
- Interface) 28
- 1.6 PROFIBUS DP 30
- I/O Systems from Siemens 31
- Network Configuration 32
- FMS Master 34
- 1.6.4 DP Slave Mode 35
- Configuring 36
- Networking in a Multiproject 36
- Variants 37
- Configuration of the System 38
- 2.3 Attaching to PROFIBUS 47
- 2.3.2 Optical Attachment 48
- Direct Optical Attachment 49
- S7−300 Series 50
- S7−400 Series 52
- by configuring in the 55
- Settings 61
- Standard 62
- Universal (default setting) 62
- User-defined 62
- Subnet Attachment 64
- Graphic Overview in NetPro 66
- Overview in Table Form 67
- Addresses Tab 68
- Operating Mode Tab 69
- Field Device Parameter 71
- Multiplex OP Connections / 71
- Communication Variables Tab 72
- Diagnostics Tab 72
- Modifications 76
- Multiple Assignment 76
- Setting Up Connections 76
- Configuring the DP Mode 76
- Type of Interface 77
- 3.4 Additional Functions 79
- SIMATIC S7-300 81
- 4.1 Overview 82
- 4.2 Procedure 83
- Programming 84
- Obtaining the Functions (FCs) 84
- Bus Parameters 86
- Sequence of the Modes 90
- DP Process 91
- Assigning an Address Offset 94
- Configuration Table 95
- Size of the Total Area 95
- To achieve synchronization 98
- To update the data of a 98
- Release 09/2011 100
- C79000−G8976−C181−05 100
- Overview 101
- Reaction Time of the Master 102
- Other Possibilities 102
- Updating DP Data Areas 104
- Functions 104
- Initializing a DP Master 104
- CPU Cycle 104
- DP_CTRL Control job 105
- Examples 106
- DP Modes 107
- Changing DP Modes 107
- User Intervention 108
- Control Job with DP_CTRL 109
- Reading Input/Output Data 110
- Application and Uses 111
- Using FC DP-CTRL 111
- SIMATIC S7−300 112
- 5.1 DP Diagnostic Options 113
- Diagnostic Sequence 114
- Integration in the CPU Cycle 115
- Bit Meaning 116
- 5.3 The DP Station List 117
- Saving the Station List 119
- 5.4 DP Single Diagnostics 120
- Response 122
- Application Program 122
- Saving the Diagnostic Data 122
- Bit No. ExplanationMeaning 124
- Bit No. Meaning Explanation 124
- Mode with an S7-300 System 126
- 6.1 Procedure 127
- Characteristics 128
- Tasks of the PROFIBUS CP 128
- Area of Consistency 128
- Functions (FCs) 130
- 6.2.2 DP Data Area on the CPU 131
- DP buffers in PROFIBUS CP 132
- Initialization 133
- Parameter Assignment 133
- Configuration 133
- Watchdog 134
- Diagnostic Data 134
- 6.2.4 Global Control Jobs 135
- Procedure 136
- Requirements 137
- Basic Data of the DP Slave 142
- Programming the DP Slave Mode 143
- Purpose of the FC 143
- Evaluate the Code Bits 143
- Structure of DPSTATUS 144
- Calling FCs in the CPU Cycle 144
- 6.5 Starting Up a DP Slave 145
- 7.1 Procedure 147
- More than One Subnet 148
- Application 150
- Requirement for Configuration 151
- Priority of the Frames 151
- Amounts of Data 152
- Connections 158
- New Connection 158
- Introduction 162
- Opening the Dialog 162
- General Tab 163
- Routing to Distribute Load 164
- Overview Tab 169
- Programming FDL Connections 174
- Principle 176
- 8 NCM S7 Diagnostics 178
- 8.1 Overview 179
- Mode-Dependent Functions 180
- Installation 181
- Structure 182
- Operation 182
- 8.2.2 General Menu Commands 183
- 8.3 Starting Diagnostics 184
- 8.3.4 Using a Gateway 187
- Case b: Several Gateways 188
- 8.4 Steps in Diagnostics 191
- 9 Firmware Loader 205
- 9.1 Application 206
- 9.2 Loading Firmware 207
- Further information 208
- A Pinout 209
- SIMATIC NET S7−CPs 210
- EMC Directive 211
- Machinery Directive 212
- CSA Certification 214
- FM Approval 214
- C References and Literature 216
- Order Numbers 220
- D Document History 221
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