No communication between Empower and 2489 and e2695 after power outage - WKB67308

SYMPTOMS

• Unable to connect to instrument components in Empower.
• Instrument modules are OK? NO. 
• DHCP only populates with 2489 IP address.
• Switching ports on the switch box did not resolve the issue.
• Instruments initialize correctly with no hardware failures.

ENVIRONMENT

• Empower
• eAlliance HPLC System
• e2695 Separations Module
• 2489 UV/Vis Detector

CAUSE

Communication failure

FIX or WORKAROUND

1. Power-off the instruments.
2. Delete IP addresses from Waters DHCP. 
3. Restart the LAC/E32 (or workstation) and log into Windows.
4. Power-on the e2695 and 2489.
5. Log into Empower and confirm that, in node properties, both say OK? YES.

ADDITIONAL INFORMATION