GE Industrial Solutions Entellisys 4.0 System Administrator Manual User Manual

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Troubleshooting

Solution: There are many different reasons that this could occur.

For single lineups: Verify that the IP address for the time server matches one of the CPUs

For multiple lineups coupled with closed circuit networks without a VPN:

• Verify that the IP addresses for each CPU and HMI are unique
• Verify that CPUs or HMIs can be pinged from either lineup
• Verify that the IP address entered matches the IP address entered on the “Master

HMI” on the “Master Lineup”

For multiple lineups coupled with closed circuit networks with a VPN:

• Follow the same checklist for closed circuit networks without a VPN (above)
• Verify that port 123 is allowed in all VPNs

Condition: The event log shows time differences between HMI and CPU events

Problem: The HMI and CPU time clocks are different

Solution:

• On all HMIs: Verify that the time zones are all correct
• On all HMIs (except the “Master HMI”): Verify that the “Enable HMI Time

Synchronization” is checked

• Restart the “Master HMI” and navigate to the Time Synchronization tab (Main Menu,

Maintenance) and click the “Update Now” button

Condition: An HMI is not synchronized with the time server

Problem: The Windows Service may not be configured with the correct time server

Solution: Go to the

Time Synchronization tab (Main Menu, Maintenance) and verify the correct IP

address and click the Apply button