It seems that our HMI and S5 PLC has problems communicating. The error "H-DB is not available" keeps appearing on the MT-40. I think the cause is the missing handling blocks (Please see picture below). When I checked our PLC program, I cannot find them anywhere in the S5 PL at allC. Should it be that the S5 PLC download these blocks from the MT-40 HMI?
Thanks,