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3.4. How to solve Ethernet communication problem

3.4. How to solve Ethernet communication problem​

 

In case normal operation cannot be done in relation to RS-232C communication, open commend prompt of Window as [Figure 3.25] and [Figure 3.26] and execute ping command to IP address of robot controller.

 

The conclusions according to test result are as [Table 3-4] below

 

Figure 3.25 Example of ping response from robot controller

 

Figure 3.26 Example of no ping response from robot controller

 

Table 3‑4 Ping test result for controller

Result

Conclusion (Reasons which can be presumed)

Reply from {IP ADDRESS} is displayed.

This means that there is ping response from robot controller.

Ethernet connection between controller and PC is normal, but the communication can’t be established due to other reasons.

- Wrong communication setting of HRView

- Monitoring service error of robot controller

→ Try turning off and on HRView and robot controller together.

- HRView service prohibited by window firewall

→ Include HRView to excluded program list of window firewall.

(Control panel – Security center – Windows firewall – Exclusion tab)

Request timed out is displayed.

This means that there is no ping response from robot controller.

▶ In case there is a problem on internet or LAN to a relevant PC:

→ Faulty Ethernet function of PC, request PC inspection

▶ In case there is no problem on internet or LAN to a relevant PC:

- Wrong IP address setting or discordance of subnet

 

- Wrong Ethernet cable connection between robot controller and PC.

(cable disconnected, wrong cable production, etc)

- (In case hub is used) Faulty hub, bad power condition

→ Check cable by LAN tester or replace cable.

 

- Ethernet cable inside of robot controller cabinet disconnected or faulty Ethernet function of controller main board

→ Inquire to A/S center of our company