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CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
10-2-3 Updating the Clock Information ................................................................................................ 10-4
Section 11 SNMP Agent
11-1 SNMP Agent........................................................................................................................... 11-2
11-1-1 Overview................................................................................................................................... 11-2
11-1-2 Specifications............................................................................................................................ 11-3
11-1-3 SNMP Messages...................................................................................................................... 11-3
11-1-4 MIB Specifications .................................................................................................................... 11-4
11-2 Procedure to Use the SNMP Agent.................................................................................... 11-19
11-2-1 Procedures ............................................................................................................................. 11-19
11-2-2 Settings Required for the SNMP Agent .................................................................................. 11-19
Section 12 Communications Performance and Communications
Load
12-1 Communications System...................................................................................................... 12-2
12-1-1 Tag Data Link Communications Method................................................................................... 12-2
12-1-2 Calculating the Number of Connections ................................................................................... 12-4
12-1-3 Packet Interval (RPI) Accuracy................................................................................................. 12-5
12-2 Adjusting the Communications Load.................................................................................. 12-6
12-2-1 Checking Bandwidth Usage for Tag Data Links........................................................................ 12-7
12-2-2 Tag Data Link Bandwidth Usage and RPI................................................................................. 12-8
12-2-3 Adjusting Device Bandwidth Usage.......................................................................................... 12-9
12-2-4 Changing the RPI ................................................................................................................... 12-10
12-2-5 RPI Setting Examples............................................................................................................. 12-16
12-3 I/O Response Time in Tag Data Links................................................................................ 12-21
12-3-1 Timing of Data Transmissions................................................................................................. 12-21
12-3-2 EtherNet/IP Unit Data Processing Time ................................................................................. 12-22
12-3-3 Effect of Tag Data Links on Task Periods ............................................................................... 12-24
12-3-4 Maximum Tag Data Link I/O Response Time ......................................................................... 12-25
12-4 Message Service Transmission Delay............................................................................... 12-27
Section 13 Troubleshooting
13-1 Checking Status with the Network Configurator................................................................ 13-2
13-1-1 The Network Configurator's Device Monitor Function .............................................................. 13-2
13-2 Using the LED Indicators and Display for Troubleshooting............................................ 13-10
13-2-1 Errors Occurring at the EtherNet/IP Unit ................................................................................ 13-10
13-3 Connection Status Codes and Error Processing ............................................................. 13-20
13-4 Error Log .............................................................................................................................. 13-26
13-4-1 Error Log Data ........................................................................................................................ 13-26
13-4-2 Error Log Error Codes ............................................................................................................ 13-27
13-5 Event Logs ........................................................................................................................... 13-31
13-5-1 Overview of the Event Logs.................................................................................................... 13-31
13-5-2 Error Table .............................................................................................................................. 13-32
13-5-3 Error Descriptions................................................................................................................... 13-35
13-6 Troubleshooting................................................................................................................... 13-48
13-6-1 CPU Unit's ERR Lit or Flashing.............................................................................................. 13-48
13-6-2 General Ethernet Problems .................................................................................................... 13-48
13-6-3 Tag Data Links Fail to Start* ................................................................................................... 13-49
13-6-4 Tag Data Link Problems.......................................................................................................... 13-50
13-6-5 Message Timeout Problems................................................................................................... 13-51
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