E - VAE ProSys sro

7.7 HistoryThe history is a buffer area which stores all texts and messages in chronological order. The number of entries islimited to 170 with MT-30/ MT-40/ MT-60 and 10kB with MT-45/ MT-91/ MT-121. If the history is full the oldestmessage will be deleted and the new message willl be entered (ring buffer).To MT-45/ MT-91/ MT-121 applies:The number of entries depends on the type of text which is entered, since the texts are compressed for storage inthe buffer.Memory requirement for one history entry : 11byte + memory requirement for variablesExample :Text 100 has the following appearance and requires 11+10+10=31byte memory:"machine #AAAAAAAAAA motor revs : #UUUUU"When the history memory is full, the oldest message will be deleted and the new one will be entered (ring buffer).It is possible to make an analysis of events by scrolling through the history buffer with the keys and