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Communications System Section 10-1
10-1-3 Network Transmission Delay Time
In an EtherNet/IP network, the tag data link packets are sent once each
packet interval (RPI), but several delays occur between the transmission of
packets from each node and the arrival of the packets at the destination
nodes. The following diagram shows the 4 major delay sources.
Total network transmission delay = (1) Send processing delay + (2) Ca-
ble delays + (3) Switching hub delay
+ (4) Receive processing delay
The lengths of these delays depend on many factors, such as the tag data link
connection settings (number of connections and data sizes), number of
nodes, the switching hub being used, and cable lengths. Each delay is
described in detail below.
1. Send Processing
Delay
The send processing delay is the delay that occurs within the EtherNet/IP Unit
or built-in EtherNet/IP port when data packets are sent once each packet
interval. This delay varies with the RPI error shown in the following graph, so
the send processing time is the maximum value for each RPI.
2. Cable Delay The cable delay is the time required for the data signal to pass through the
cable and reach the destination. When an STP (shielded twisted-pair) cable of
category 5, 5e, or higher is being used, the maximum cable delay is 545 ns/
100 m. The cable delay represents a very small percentage of the total tag
data link delay.
EtherNet/IP
Unit
Switching hub
(1) Send
processing
delay
(
2
)
Cable dela
y(
2
)
Cable dela
y(
3
)
Switchin
g
hub dela
y
EtherNet/IP
Unit
(4) Receive
processing
delay
Data
Packet interval (RPI) RPI error (±) (%)
0.5 to 1,000 ms 15 − (RPI (ms) ÷ 100)
1,000 ms to 10,000 ms 5% of the RPI
0
2
4
6
8
10
12
14
16
0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000
RPI [ms]
RPI error (±)[%]
- OPERATION M ANUAL 1
- EtherNet/IP Units 3
- OMRON Product References 5
- Visual Aids 5
- Trademarks and Copyrights 5
- TABLE OF CONTENTS 10
- About this Manual: 11
- Relevant Manuals 12
- WARRANTY 15
- LIMITATIONS OF LIABILITY 15
- Application Considerations 16
- Disclaimers 17
- Unit Versions of CS/CJ-series 19
- CIP Revisions and 20
- Unit Versions 20
- PRECAUTIONS 21
- 1 Intended Audience 22
- 2 General Precautions 22
- 3 Safety Precautions 22
- Safety Precautions 3 23
- 5 Application Precautions 24
- Application Precautions 5 25
- 6-1 Applicable Directives 26
- 6-2 Concepts 26
- SECTION 1 27
- Overview of EtherNet/IP 27
- 1-1 EtherNet/IP Unit Features 28
- Recommended 30
- Switching Hubs 30
- Communications 34
- Controller Link 35
- 1-5-1 Overview 36
- SECTION 2 39
- Unit Specifications 39
- Specifications 40
- CJ-series EtherNet/IP Unit 41
- 2-1-4 Dimensions 45
- 2-1-5 Software Configuration 46
- 192.168.250.1 47
- 255.255.255.0 47
- CS1W-EIP21 48
- @@@@@@@@@@@@ 48
- Displays errors that occurred 51
- 2-2-2 Switch Settings 52
- Node Address Setting 53
- 2-3-3 Switching Hub Types 54
- 2-3-4 Switching Hub Functions 55
- SECTION 3 59
- 3-1-1 Procedures 60
- 3-2 Switch Settings 62
- Switch Settings Section 3-2 63
- Setting the Unit Number 63
- Setting the Node Address 63
- Mounting to a PLC Section 3-3 64
- 3-3-3 Mounting 65
- 3-3-4 Handling Precautions 66
- 3-4 Network Installation 67
- Mounting Location 69
- Cable Location 69
- 3-5 Connecting to the Network 70
- EtherNet/IP Unit 71
- RJ45 Modular Connector 71
- Example: CS1W-EIP21 71
- 3-6 Creating I/O Tables 72
- Initial screen 73
- Password 73
- 3-8 TCP/IP and Link Settings 78
- 3-9 Tag Data Link Parameters 83
- 3-10 Other Parameters 87
- Other Parameters Section 3-10 88
- Using FINS/TCP 88
- Using FTP 88
- Using the Status Area 89
- Using SNMP 90
- Using SNMP Trap 90
- 3-11 Communications Test 91
- Application Example 92
- SECTION 4 93
- Memory Allocations 93
- 4-2 CIO Area Allocations 96
- User Settings 97
- Unit Status 2 101
- (EtherNet/IP Unit to 101
- CPU Unit) (n + 11) 101
- Configuration set 105
- 4-3 DM Area Allocations 109
- 4-4 User Settings Area 111
- 4-5 Auxiliary Area Data 114
- SECTION 5 117
- Determining IP Addresses 117
- 5-1 IP Addresses 118
- 5-1-4 Subnet Masks 119
- 5-1-5 CIDR 120
- UDP port 122
- TCP port 122
- Local FINS node number 123
- Local IP address 123
- Remote FINS node number 123
- ■ Local Device: Server 127
- ■ Local Device: Client 127
- FINS node number transmission 127
- 5-2-3 Application Examples 128
- Models Supporting 130
- Automatic Generation 130
- Method (Static) 130
- Models Supporting IP 130
- Address Table Method 130
- Models that Can Use the 131
- Combined Method 131
- FINS/UDP and FINS/TCP 131
- IP router 132
- Global address 132
- (required) 132
- ■ FINS Communications Service 133
- SECTION 6 137
- Tag Data Link Functions 137
- 6-1-1 Tag Data Links 138
- 6-1-2 Overview of Operation 139
- 6-1-4 Data Link Data Areas 142
- PLC status 143
- PLC Operating Flag 144
- PLC Error Flag 144
- I/O memory 145
- CPU Unit 145
- Connection 145
- 6-2 Setting Tag Data Links 147
- 6-2-3 Registering Devices 151
- Select Disable or Enable 155
- Configurator 162
- 6-2-5 Connection Settings 167
- Automatically Setting 173
- Connections 173
- Device Connection 175
- Structure Tree 175
- ■ Setting Example A 178
- ■ Allocations 178
- Drag & Drop 185
- Connecting through 187
- Ethernet 187
- Network connection icon 188
- EtherNet/IP 191
- Verifying the Network 199
- Configuration 199
- Verifying the Device 200
- Parameters 200
- 6-2-17 Checking Connections 206
- 6-2-18 Changing Devices 207
- Normal Target Node 210
- Tag Data Link 210
- Operating 210
- SECTION 7 213
- Overview Section 7-1 214
- Ethernet (EtherNet/IP) 217
- Flashing red 220
- Not relevant 220
- SECTION 8 223
- FINS Communications 223
- Application Layer 224
- Transport Layer 224
- Internet Layer 224
- Physical Layer 224
- 8-2 FINS/UDP Method 226
- FINS/UDP Method Section 8-2 227
- 8-3 FINS/TCP Method 228
- FINS/TCP Method Section 8-3 229
- 8-4-1 Routing Table Overview 233
- Routing Tables Section 8-4 234
- 8-5 Using FINS Applications 237
- 1 (EtherNet/IP Unit) 239
- 8-5-2 FinsGateway 241
- • Communication Unit Tab Page 242
- (@)SEND(90) 248
- (@)RECV(98) 249
- (@)CMND(490) 250
- 8-6-4 Writing Programs 252
- 8-6-5 Program Example 256
- (See note 1.) 120000 257
- (See note 1.) 257
- ■ Conditions for High Traffic 258
- SECTION 9 259
- Message Communications 259
- Explicit message 260
- PLC's 261
- CIP UCMM MESSAGE SEND (28 10) 262
- (See note.) 263
- EXPLICIT MESSAGE SEND (28 01) 267
- Transport ID 270
- Message monitoring time 270
- Message request size 270
- Program Example 273
- Service Code 277
- Attribute Value 277
- Detailed status 280
- Address L 282
- No. of bytes read 282
- Address H 282
- No. of words read 283
- SECTION 10 287
- 10-1 Communications System 288
- Packet Interval (RPI) 289
- Multicast 290
- 1. Send Processing 291
- 10-2-4 Changing the RPI 298
- 10-2-5 RPI Setting Examples 302
- Example Conditions 303
- Checking the Device 303
- Bandwidth Usage 303
- Changing the 304
- Settings 304
- Coefficient 311
- : I/O processing 313
- : Data exchange 313
- 10-4-1 Overview 317
- SEND(090) Instruction 320
- RECV(098) Instruction 323
- SECTION 11 327
- FTP Server 327
- 11-1-1 Overview 328
- 11-1-2 Specifications 329
- 11-2-1 File Types 329
- 11-3-1 Procedure 331
- 11-3-3 FTP Tab 332
- $ ftp 150.31.2.83 333
- Name:CONFIDENTIAL 333
- 230 Guest logged in 333
- 11-5 Using FTP Commands 334
- 11-6 Checking FTP Status 340
- FTP Status Flag 340
- 11-7-1 File Memory 341
- 11-7-2 File Types 341
- .IOM file contents 343
- ■ CSV Format 344
- 11-8 FTP File Transfer Time 346
- ··· FTP started 347
- ··· Login name 347
- ··· Binary data type set 348
- File read 348
- File written 348
- FTP ended 348
- SECTION 12 349
- EtherNet/IP Unit or 350
- 12-1-2 Specifications 351
- 12-2-1 Procedure 351
- 12-2-3 Auto Adjust Time 353
- Function 354
- SECTION 13 357
- 13-1-1 Cleaning 358
- 13-1-2 Inspection 358
- 13-2 Simple Backup Function 359
- DIP switch settings 361
- 13-3 Using the Backup Tool 362
- SECTION 14 365
- Errors Related to the Tag 378
- Data Links 378
- Errors Related to Memory 379
- Errors Related to the 381
- Email [email protected] 385
- WEB www.odva.org 385
- 14-4 Error Log Function 390
- 14-4-4 Error Log Error Codes 391
- 14-5 Troubleshooting 394
- Troubleshooting Section 14-5 395
- 14-5-4 Tag Data Link Problems 396
- Relay Error Flag 397
- Appendix A 401
- Appendix B 403
- Appendix C 405
- Appendix D 407
- Terminology 408
- Route Path 409
- Port Segment 410
- Logical Segment 411
- Setting the Route Path 412
- Response Codes 413
- Appendix E 417
- CONTROLLER DATA READ 418
- Command code 418
- Mode Setting (Response) 419
- Ethernet Address (Response) 419
- CONTROLLER STATUS READ 420
- INTERNODE ECHO TEST 422
- 1,998 bytes max 422
- BROADCAST TEST RESULTS READ 423
- BROADCAST DATA SEND 423
- ERROR LOG READ 424
- ERROR LOG CLEAR 425
- Command Block 426
- Response Block 426
- IP ADDRESS TABLE WRITE 429
- IP ADDRESS WRITE 430
- Precautions 431
- IP ADDRESS TABLE READ 431
- IP ROUTER TABLE READ 432
- PROTOCOL STATUS READ 433
- TCP Status (Response) 435
- MEMORY STATUS READ 437
- SOCKET STATUS READ 439
- Command 439
- ADDRESS INFORMATION READ 440
- IP ADDRESS READ 441
- EXPLICIT MESSAGE SEND 442
- CIP UCMM MESSAGE SEND 443
- Description 444
- Appendix F 445
- Creating EDS Files 446
- Deleting EDS Files 446
- Saving EDS Files 446
- Searching EDS Files 447
- Appendix G 449
- Numerics 453
- Revision History 461
- Contact: www.ia.omron.com 464
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