e.bloxx Communication
MODBUS PROTOCOL
HB_EBLOXX_COM_E_V12.doc
35
Gantner Instruments Test & Measurement GmbH
Read Input Register
Description:
With this command input registers (read only registers) can be read.
Request Telegram
Response Telegram
ADR ........... ISM 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 databytes (max. 64)
D0 - Dn ...... Data bytes (max. 64)
CRC ........... Check sum
CRC polynom: u
15
+ u
13
+ 1
CRC start value:
hex
FFFF
ADR FNR REGSTA
REGNUM
CRC
04
MSB LSB MSB LSB MSB LSB
ADR FNR BYTNUM
D0
D1
...
Dn
CRC
04
MSB LSB
Содержание E Series
Страница 1: ...e bloxx Communication Guide Vers No 12...
Страница 2: ......
Страница 4: ...e bloxx Communication 2 HB_EBLOXX_COM_E_V12 doc Gantner Instruments Test Measurement GmbH...
Страница 24: ...e bloxx Communication PROFIBUS PROTOCOL 22 HB_EBLOXX_COM_E_V12 doc Gantner Instruments Test Measurement GmbH...