Schneider Electric Processor Adapter - Manual (Page 375)

Configuring a Modbus Plus Network in Concept with Peer Cop
870 USE 101 10 V.2 375
Other Default Settings in the Peer Cop Dialog Box, Continued
Last Value The default Last Value setting is Clear on timeout . This setting specifies how a
peer-copped device will treat the last values received before a timeout, once
Modbus Plus communications have been restored.
Option Effect
Clear on timeout Sets all values received before timeout to 0.
Hold on timeout Retains the values received before timeout.