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14 Communications Performance and Communications Load

NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)

14-2 Adjusting the Communications Load

14-2-4 Changing the RPI

(3) In the Register Device List, select the connection for which you want to change the

RPI, and click the Edit Button.

(4) The device’s Edit Connection Dialog Box will be displayed. Input a new packet inter-

val (RPI) value, and click the OK Button.

Introduction3
Relevant Manuals4
Manual Structure6
Sections in this Manual9
- Table of Contents10
Terms and Conditions Agreement16
Safety Precautions18
Precautions for Safe Use19
Precautions for Correct Use20
Regulations and Standards21
Versions23
Related Manuals27
Revision History29
- Introduction31
1-1 Introduction32
- Ethernet/Ip Features32
- Introduction32
- Features of Built-In Ethernet/Ip Port on NJ/NX-Series CPU Units33
System Configuration and Configuration Devices35
- Devices Required to Construct a Network35
- Support Software Required to Construct a Network36
Built-In Ethernet/Ip Port37
- Specifications37
- Part Names and Functions41
Introduction to Communications Services45
- CIP (Common Industrial Protocol) Communications Services45
- IP Routing47
- BOOTP Client48
- FTP Server48
- FTP Client49
- Automatic Clock Adjustment49
- Socket Service50
- Specifying Host Names50
- SNMP Agent51
Ethernet/Ip Communications Procedures52
- Outline52
  - Installing Ethernet Networks55
Section 2 Installing Ethernet Networks56
Selecting the Network Devices56
- Recommended Network Devices56
- Ethernet Switch Types57
- Ethernet Switch Functions57
- Precautions for Ethernet Switch Selection58
Network Installation60
- Basic Installation Precautions60
- Recommended Network Devices60
- Precautions When Laying Twisted-Pair Cable60
- Precautions When Installing and Connecting Ethernet Switches64
Connecting to the Network65
- Ethernet Connectors65
- Connecting the Cable66
System-Defined Variables Related to the Built-In Ethernet/Ip Port67
System-Defined Variables69
Specifications for Individual System-Defined Variables99
- Determining IP Addresses127
IP Addresses128
- IP Address Configuration128
- Allocating IP Addresses129
- Subnet Masks129
- Cidr130
Built-In Ethernet/Ip Port IP Address Settings131
- Determining IP Addresses131
- Setting IP Addresses132
- Online Connection135
- Checking the Current IP Address138
Private and Global Addresses139
- Using a Private Address for the Built-In Ethernet/Ip Port140
- Using a Global Address for the Built-In Ethernet/Ip Port141
  - Sysmac Studio Settings for the Built-In Ethernet/Ip Port143
Section 5 Sysmac Studio Settings for the Built-In Ethernet/Ip Port144
TCP/IP Settings Display144
Link Settings Display148
FTP Display149
NTP Settings Display150
SNMP Settings Display152
SNMP Trap Settings Display154
- Testing Communications157
6-1 Testing Communications158
- PING Command158
- Using the PING Command158
- Host Computer Operation159
Section 7 Tag Data Link Functions162
Introduction to Tag Data Links162
- Tag Data Links162
- Data Link Data Areas163
- Tag Data Link Functions and Specifications166
- Overview of Operation167
- Starting and Stopping Tag Data Links169
- Controller Status170
- Controller Status171
- Concurrency of Tag Data Link Data173
Setting Tag Data Links178
- Starting the Network Configurator178
- Tag Data Link Setting Procedure180
- Registering Devices181
- Creating Tags and Tag Sets183
- Connection Settings195
- Creating Connections Using the Wizard205
- Creating Connections by Device Dragging and Dropping208
- Connecting the Network Configurator to the Network211
- Downloading Tag Data Link Parameters218
- Uploading Tag Data Link Parameters221
- Verifying the Tag Data Links224
- Starting and Stopping Tag Data Links228
- Clearing the Device Parameters230
- Saving the Network Configuration File232
- Reading a Network Configuration File233
- Checking Connections235
- Changing Devices236
- Displaying Device Status237
Ladder Programming for Tag Data Links238
- Status Flags Related to Tag Data Links243
Tag Data Links with Other Models244
- CIP Message Communications247
Section 8 CIP Message Communications249
Overview of the CIP Message Communications Service249
- Message Communications Service Specifications249
CIP Messaging Communications Client Function250
- Overview250
- CIP Communications Instructions251
- Using CIP Communications Instructions252
- Route Path253
- Request Path (IOI)263
- Service Data and Response Data267
- Sample Programming for CIP Connectionless (UCMM) Message Communications268
- Sample Programming for CIP Connection (Class 3) Message Communications273
- Operation Timing280
- Response Codes281
CIP Communication Server Functions285
- CIP Message Structure for Accessing CIP Objects286
- CIP Message Structure for Accessing Variables286
Specifying Request Path287
- Examples of CIP Object Specifications287
- Examples of Variable Specifications287
- Logical Segment288
- Data Segment289
- Specifying Variable Names in Request Paths290
CIP Object Services293
- CIP Objects Sent to the Built-In Ethernet/Ip Port293
- Identity Object (Class ID: 01 Hex)293
- TCP/IP Interface Object (Class ID: F5 Hex)296
- Ethernet Link Object (Class ID: F6 Hex)299
- Controller Object (Class ID: C4 Hex)304
Read and Write Services for Variables305
- Read Services for Variables305
- Write Service for Variables307
Variable Data Types309
- Data Type Codes309
- Common Format310
- Elementary Data Types310
- Derived Data Types312
Section 9 Socket Service316
Basic Knowledge on Socket Communications316
- Sockets316
- Port Numbers for Socket Services316
Basic Knowledge on Protocols317
- Differences between TCP and UDP317
- Fragmenting of Send Data319
- Data Reception Processing321
- Broadcasting324
Overview of Built-In Ethernet/Ip Port Socket Services325
- Overview325
- Procedure325
Settings Required for the Socket Services326
Socket Service Instructions327
Details on Using the Socket Services328
- Using the Socket Services328
- Procedure to Use Socket Services329
- Timing Chart for Output Variables Used in Communications331
- UDP Sample Programming333
- TCP Sample Programming338
Precautions in Using Socket Services344
- Precautions for UDP and TCP Socket Services344
- Precautions for UDP Socket Services344
- Precautions for TCP Socket Services344
  - FTP Server347
Section 10 FTP Server348
Overview and Specifications348
- Overview348
- Specifications348
FTP Server Function Details349
- Supported Files349
- Connecting to the FTP Server349
Using the FTP Server Function352
- Procedure352
- List of Settings Required for the FTP Server Function352
FTP Server Application Example353
Using FTP Commands355
- Table of Commands355
- Using the Commands356
- Using SD Memory Card Operations362
- Application Example from a Host Computer365
Section 11 FTP Client368
- FTP Client368
- Using the FTP Client to Transfer Files368
- FTP Client Communications Instructions371
  - Functions of the FTP Client Communications Instructions371
  - Restrictions on the FTP Client Communications Instructions373
- FTP Client Application Example375
Automatic Clock Adjustment381
- Overview382
- Automatic Clock Adjustment382
- Specifications383
- Procedure to Use the Automatic Clock Adjustment Function384
  - Procedure384
  - Settings Required for Automatic Clock Adjustment384
SNMP Agent386
- Overview386
- Specifications387
- SNMP Messages387
- MIB Specifications388
- Procedure to Use the SNMP Agent406
  - Procedures406
  - Settings Required for the SNMP Agent406
Communications Performance and Communications Load409
- Communications System410
- Adjusting the Communications Load414
I/O Response Time in Tag Data Links430
- Timing of Data Transmissions430
- Built-In Ethernet/Ip Port Data Processing Time431
- Relationship between Task Periods and Packet Intervals (Rpis)433
- Maximum Tag Data Link I/O Response Time434
Message Service Transmission Delay436
- Troubleshooting439
Overview of Errors440
- How to Check for Errors441
- Errors Related to the Ethernet/Ip Function Module447
Troubleshooting451
- Error Table451
- Error Table457
- Error Descriptions457
- Error Descriptions458
- Troubleshooting489
Checking Status with the Network Configurator490
- The Network Configurator's Device Monitor Function490
- Connection Status Codes and Troubleshooting497
Appendices503
Functional Comparison of Ethernet/Ip Ports on NJ/NX-Series CPU Units and Other Series504
- Functional Comparison of Ethernet/Ip Ports on NJ/NX- Series CPU Units and Other Series504
Use the Sysmac Studio to Set the Tag Data Links (Ethernet/Ip Connections505
- A-2-1 Overview of the Tag Data Links (Ethernet/Ip Connections) Settings with the Sysmac Studio505
- Overview of the Tag Data Links (Ethernet/Ip Connections) Settings with the Sysmac Studio505
- A-2-2 Procedure to Make the Ethernet/Ip Connection Settings with the Sysmac Studio507
- Procedure to Make the Ethernet/Ip Connection Settings with the Sysmac Studio507
- Ethernet/Ip Connection Settings507
- A-2-3 Ethernet/Ip Connection Settings508
- A-2-4 Making the Ethernet/Ip Connection Settings with the Sysmac Studio513
- Making the Ethernet/Ip Connection Settings with the Sysmac Studio513
- A-2-5 Checking Communications Status with the Sysmac Studio and Troubleshooting536
- Checking Communications Status with the Sysmac Studio and Troubleshooting536
- A-2-6 Troubleshooting540
- Troubleshooting540
EDS File Management546
- A-3-1 Installing EDS Files547
- A-3-2 Creating EDS Files547
- Installing EDS Files547
- Creating EDS Files547
- A-3-3 Deleting EDS Files548
- A-3-4 Saving EDS Files548
- Deleting EDS Files548
- Saving EDS Files548
- A-3-5 Searching EDS Files549
- Searching EDS Files549
- A-3-6 Displaying EDS File Properties550
- A-3-7 Creating EDS Index Files550
- Displaying EDS File Properties550
- Creating EDS Index Files550
Precautions for Using the Network Configurator on Windows XP, Windows Vista, or Windows 7551
- A-4-1 Changing Windows Firewall Settings551
- Changing Windows Firewall Settings551
Variable Memory Allocation Methods554
- A-5-1 Variable Memory Allocation Rules554
- A-5-2 Important Case Examples562
- Important Case Examples562
Precautions When Accessing External Outputs in CPU Units566
TCP State Transitions567
Version Information569

Brand	Omron
Model	Sysmac NJ-series
Category	Computer Hardware
Language	English

Omron Sysmac NJ-series User Manual

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