Kipp&Zonen COMBILOG Data Logger - Manual (Page 131)

BYTNUM ..... number of data bytes (max. 64)
D0 - Dn ....... data bytes (max. 64)
CRC ............ check sum
CRC polynomial: u
15 + u 13 + 1
CRC start value: hex FFFF
Read Input Register
Description:
By this command input registers (read-only registers) can be
read.
Request Telegram
ADR FNR REGSTA REGNUM CRC
4 MSB LSB MSB LSB MSB LSB
Response Telegram
ADR FNR BYTNUM D0 D1
4
…
Dn CRC
MSB LSB
ADR ............ module address (hex 00..7F)
FNR ............ function number (hex 04)
REGSTA ..... address of the first register to be read
REGNUM .... number of registers to be read
BYTNUM ..... number of data bytes (max. 64)
D0 - Dn ....... data bytes (max. 64)
CRC ............ check sum
CRC polynomial: u
15 + u 13 + 1
CRC start value: hex FFFF
Hardware Manual COMBILOG 1022
131