Technical FAQs

Ask a Question

What does a Unity Quantum "Dead error 405 81" indicate?

Dead error 405 means "time out waiting for Modbus Plus"
Sub code 81 means "Prom Checksum error"
During operation the MB+ processor periodically performs self tests. This error means that the computed checksum was bad.

Legacy KB System (APS) Data: RESL212139 V1.0, Originally authored by DaSo on 07/24/2013, Last Edited by DaSo on 07/24/2013
Related ranges: Unity Pro - SoCollaborative software
Was this helpful?
What can we do to improve the information ?