Kipp&Zonen COMBILOG Data Logger - Manual (Page 104)

Following points have to be considered, referring to the above
example:
 Decimals are not cut off, but are rounded off.
 In case of overflow with a transmission in ASCII-format
the identification key "E" (for Format Error) is given at
the first position in the transmission format.
 With transmission in MODBUS-format no identification
key is given in case of overflow. The number of decim-
als must, however, not be selected too large, if the
value is to be transmitted in integer-format (range of
values in integer-format limited to -32768 to +32767).
Hardware Manual COMBILOG 1022 104