Xylem CHATTER RTU and E-mail - Manual (Page 197)

USERS MANUAL
CHATTER™ DATA LOGGER
197
Data logger
General
Newest log-value *
A Log Value must be read in an single Telegram.
It is not possible to break up reading first part of the value in first telegram and Last part in the next
* What signal that is read from signal A, B, C, D is configured with "840140 MJK Chatter Link"
* If log value is missing maybe because log interval is not 5 min , then the value before is returned (a newer one)
Firmware <= 850008-001 (ONLY SUPPORT READ FROM OFFSET 0)
* Every read of the first record (Value or time) in logdata ("newest") will shift all data to the start with the newest
logdata.
* Reading logs after first record, will only resulting in getting "newest" last position - this loginterval offset
Firmware >= 850008-002 (SUPPORT random read / reverse read from oldest to newest)
* Every read will sync log offset time = time now - Log interval * offset. (offset is starting at 0)