4 PLC link4.1 Operation of PLC Link MEWNET-W0 .................................................4-24.1.1 Operation Overview of PLC Link...................................................... 4-24.1.2 Roles of Link Relays and Link Registers ......................................... 4-24.2 Setting Items for PLC Link ..................................................................4-44.2.1 Unit Number Setting......................................................................... 4-44.2.2 Setting of the Largest Unit Number.................................................. 4-44.2.3 Memory Block No. of Link Relays and Link Registers to be Used ... 4-44.2.4 Ranges of Link Relays and Link Registers to be Used.................... 4-54.2.5 Link Relay Transmission Start Number and Sending Size .............. 4-54.2.6 Link Register Transmission Start Number and Sending Size .......... 4-64.3 Response Time of PLC Link ...............................................................4-94.3.1 Response Time of One Transmission Cycle .................................... 4-94.3.2 Response Time when There are Units that have not been Addedto the Link ......................................................................................... 4-10WUME-FP0HCOM-06 4-1