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Publication ENET-UM527E-EN-P - October 2006
152 Socket Interface
where:
MSG Source Length
Specify 16 bytes (Timeout + Addr + BufLen) + number of bytes to
write
MSG Destination Element
The MSG instruction returns the number of bytes that were written.
Specify a DINT tag.
Considerations
See Programming Considerations on page 135 for more information.
Element Data Type Description
Timeout DINT Specify the timeout in milliseconds
ToAddr structure A user-defined structure that specifies the address to write.
Family INT Specify the address family. Must be 2.
Port INT Specify a local port number, or set to 0 (the local port number will be
chosen by the web server). For TCP client operations, specify 0 unless
you want a specific local port number. For TCP server communications,
specify the port number on which to accept incoming connection
requests. For UDP, to receive datagrams on a specific port, you must
specify a local port number.
Addr DINT Specify an IP address. Typically, set to 0 (any address).
BufLen DINT Specify the number of bytes of data to write.
Buf SINT array Specify the data to write.
- EtherNet/IP Web 1
- Server Module 1
- Important User Information 2
- Summary of Changes 3
- Table of Contents 5
- 6 Table of Contents 6
- Table of Contents 7 7
- Appendix A 8
- Connect Over Ethernet 8
- Appendix B 8
- Table of Contents 9 9
- 10 Table of Contents 10
- Who Should Use This 11
- Publication 11
- Conventions 11
- About This Publication 11
- 12 12
- Getting Started 13
- 14 Getting Started 14
- Getting Started 15 15
- 1756-EWEB Installation 17
- 1768-EWEB Installation 18
- System Requirements 19
- Access the Module Using 19
- Your Web Browser 19
- Default Access: 20
- User Name: Administrator 20
- (not case sensitive) 20
- Password: 20
- (leave blank, no password) 20
- Navigate the Web Server 22
- Use the Web Server 23
- Access a Data View 24
- Getting Started 25 25
- Configure Email 26
- Configure the Time Server 27
- Enable/disable Other Services 28
- 30 Getting Started 30
- Web Server Module 31
- Assign Network 32
- Parameters When the 32
- Network Has a DHCP 32
- Parameters Without A 35
- DHCP Server 35
- RSWho Icon 38
- Duplicate IP Address 40
- Detection 40
- IP Address Swapping 42
- DNS Addressing 42
- Verify Network Settings 44
- Manage Module Settings 47
- Modify Network Parameters 49
- Manage Server Settings 51
- Display the Server Log 54
- About This Chapter 55
- Data Views Overview 55
- Tags Supported In Data Views 56
- Performance Estimates 56
- Create a Data View 57
- Add Tags to a Data View 58
- Monitor Data Views and 59
- Tag Data 59
- Sort Data Views 60
- Edit a Data View 61
- Create Data Views Offline 62
- Use an External 63
- Application to Access 63
- Data Views 63
- Example: Data View XML 64
- Send Email 67
- Configure the Web Server 69
- Send an Email Via the Web 70
- Send an Email with a 71
- Controller-initiated 71
- Message Instruction 71
- Enter the Ladder Logic 72
- Configure the MSG Instruction 73
- 74 Send Email 74
- Enter the Text of the Email 75
- Possible Email Status Codes 75
- 76 Send Email 76
- User Accounts and 77
- Privilege Classes 77
- Configure Access Limits 78
- For Web Pages 78
- In This Field Do This 79
- ’/user/Web/mypage.html’ 79
- Create User Accounts 80
- Recover with Unknown 81
- Password 81
- Access the Web Server’s 83
- File System 83
- File Names and Types 85
- Back Up the File System On 87
- Back Up Files 88
- Restore Files 89
- This is the /user directory 90
- Create Custom Web Pages 91
- Develop a Custom Web 93
- ASP Function Calls 93
- Read Controller Tags 94
- Read CIP Data 95
- Update Control System Data 96
- Retrieve Information About 97
- Javascript Libraries 98
- Web Page Forms and POST 102
- Handlers 102
- XML."); 103
- IMPORTANT 103
- For example, this code: 104
- HTML stream 110
- For example: 110
- Monitor Diagnostics 113
- Diagnostics Overview 114
- Network Settings 116
- Message Connections 117
- Ethernet Statistics 119
- Over Ethernet 121
- TCP Connections 123
- Additional Resources 123
- Socket Interface 125
- Architecture 126
- Socket Interface 127 127
- OpenConnection 130
- Communicate With the 132
- Socket Object Via a MSG 132
- Instruction 132
- Message Transfer Sizes 133
- Service Timeouts 134
- MSG Instruction Timeouts 134
- Socket Instance Timeouts 134
- Programming 135
- Considerations 135
- 136 Socket Interface 136
- Application Messages and TCP 137
- Partial Reads 137
- Partial Writes 138
- Socket Object Services 140
- CreateSocket 141
- MSG Source Length 142
- MSG Destination Element 142
- MSG Source Element 144
- AcceptConnection 146
- MSG Configuration Parameters 148
- MSG Source Element: 149
- DeleteSocket 153
- DeleteAllSockets 154
- Possible Error Codes for 155
- Socket Services 155
- Decimal Hexadecimal 156
- Socket Attributes 157
- 158 Socket Interface 158
- Socket Interface 159 159
- Troubleshoot Socket 160
- Applications 160
- 162 Socket Interface 162
- 164 Index 164
- Index 165 165
- 166 Index 166
- How Are We Doing? 167
- BUSINESS REPLY MAIL 168
- Rockwell Automation 170
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