Skip to main content
C
CY_100673261-Visitor
1-Visitor
October 2, 2023
Question

Able to ping but getting Bad Quality and Unknown Values

  • October 2, 2023
  • 1 reply
  • 2656 views

Hi, i am using KEPServerEX 6, connected to Mitsubishi PLCs through Mitsubishi Ethernet Driver, Q Series Model. Total there are 5 connections with the same configurations and settings, and 4 are communicating fine.

 

However for the remaining 1 PLC, i am able to ping to the IP address of the plc, but when i run the OPC Quick Client, i am getting Bad for Quality and Unknown for Value. However, occasionally i am able to get good quality with proper values from the plc.

 

I would like to know how should i go about troubleshooting it, thank you.

 

 

 

 

1 reply

R
rjanardan16-Pearl
16-Pearl
October 2, 2023

Are you able to telnet to the IP AND port while the issue is occurring? You could take a Wireshark capture to understand the communication between Kepware and the problem PLC.

C
CY_100673261-VisitorAuthor
1-Visitor
October 2, 2023

Hi, i am unable to telnet to the IP and Port. However, telnet failed as well for those PLCs that i am able to connect.

 

As for Wireshark, i will try to check on it, as im new on this software

 

Terms & ConditionsCookie settingsAccessibility statement