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11 Automatic Clock Adjustment

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

Main Page

Message Communications6
Socket Service35
Introduction36
Features of Built-In Ethernet/Ip Port on NJ-Series CPU Units37
System Configuration and Configuration Devices39
Support Software Required to Construct a Network40
Built-In Ethernet/Ip Port41
Part Names and Functions43
Introduction to Communications Services45
BOOTP Client46
FTP Server47
Socket Service48
SNMP Agent49
Ethernet/Ip Communications Procedures50
Selecting the Network Devices54
Network Devices Manufactured by OMRON55
Precautions for Ethernet Switch Selection56
Network Installation58
Connecting to the Network60
System-Defined Variables Related to the Built-In Ethernet/Ip Port61
System-Defined Variables62
IP Addresses80
Allocating IP Addresses81
Built-In Ethernet/Ip Port IP Address Settings82
Setting IP Addresses83
Online Connection85
Checking the Current IP Address87
Private and Global Addresses88
Using a Private Address for the Built-In Ethernet/Ip Port89
Using a Global Address for the Built-In Ethernet/Ip Port90
TCP/IP Display92
Link Settings Display94
FTP Display95
NTP Settings Display96
SNMP Settings Display97
SNMP Trap Settings Display99
Testing Communications101
Host Computer Operation103
Introduction to Tag Data Links106
Data Link Data Areas107
Tag Data Link Functions and Specifications109
Overview of Operation110
Starting and Stopping Tag Data Links112
Concurrency of Tag Data Link Data114
Setting Tag Data Links118
Tag Data Link Setting Procedure120
Registering Devices121
Creating Tags and Tag Sets122
Connection Settings132
Connecting the Network Configurator to the Network142
Downloading Tag Data Link Parameters147
Uploading Tag Data Link Parameters150
Verifying the Tag Data Links153
Starting and Stopping Tag Data Links156
Clearing the Device Parameters158
Saving the Network Configuration File159
Reading a Network Configuration File161
Checking Connections162
Changing Devices164
Displaying Device Status165
Ladder Programming for Tag Data Links166
Status Flags Related to Tag Data Links170
Tag Data Links with Models Other than NJ-Series CPU Units171
Overview of the CIP Message Communications Service174
Using CIP Message Communications175
Using CIP Communications Instructions176
Route Path178
Preparing Derivative Data Types to Use CIP Communications Instructions181
Sample Programming for CIP Connectionless (UCMM) Message Communications184
Sample Programming for CIP Connection (Class 3) Message Communications190
Operation Timing197
Response Codes198
CIP Objects Sent to the Built-In Ethernet/Ip Port202
TCP/IP Interface Object (Class ID: F5 Hex)204
Ethernet Link Object (Class ID: F6 Hex)206
Controller Object (Class ID: C4 Hex)210
Basic Knowledge on Socket Communications212
Basic Knowledge on Protocols213
Fragmenting of Send Data214
Data Reception Processing216
Broadcasting218
Overview of Built-In Ethernet/Ip Port Socket Services219
Settings Required for the Socket Services220
Making the Settings with the Sysmac Studio221
Socket Service Instructions223
Details on Using the Socket Services224
Procedure to Use Socket Services225
Timing Chart for Output Variables Used in Communications226
UDP Sample Programming228
TCP Sample Programming233
Precautions in Using Socket Services239
Overview and Specifications242
FTP Server Function Details243
Using the FTP Server Function245
FTP Settings Display246
FTP Server Application Example247
Using FTP Commands249
Using the Commands250
Using SD Memory Card Operations256
File Types257
Application Example from a Host Computer259
Automatic Clock Adjustment262
Specifications263
Procedure to Use the Automatic Clock Adjustment Function264
NTP Display265
Troubleshooting Automatic Clock Adjustment267
SNMP Agent272
Specifications273
MIB Specifications274
Procedure to Use the SNMP Agent290
SNMP Settings Display292
SNMP Trap Settings Display294
Troubleshooting SNMP Agent296
Communications System298
Calculating the Number of Connections300
Packet Interval (RPI) Accuracy301
Adjusting the Communications Load302
Checking Bandwidth Usage for Tag Data Links303
Tag Data Link Bandwidth Usage and RPI304
Adjusting Device Bandwidth Usage305
Changing the RPI306
RPI Setting Examples312
I/O Response Time in Tag Data Links317
Relationship between Task Periods and Packet Intervals (Rpis)319
Maximum Tag Data Link I/O Response Time321
Message Service Transmission Delay323
Overview of Errors325
Errors Related to the Ethernet/Ip Function Module330
Troubleshooting332
Error Table333
Error Descriptions338
Troubleshooting360
Checking Status with the Network Configurator361
The Network Configurator's Device Monitor Function362
Connection Status Codes and Troubleshooting366
A-1 Functional Comparison of Ethernet/Ip Ports on NJ-Series CPU Units and Other Series376
A-2 EDS File Management377
A-2-1 Installing EDS Files378
A-2-2 Creating EDS Files379
A-2-4 Saving EDS Files380
A-2-7 Creating EDS Index Files381
A-3 Precautions for Using the Network Configurator on Windows XP, Windows Vista or Windows 7382
A-4 Variable Memory Allocation Methods385
A-4-2 Important Case Examples388
A-5 Precautions When Accessing External Outputs from NJ-Series CPU Units389

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