Function example
Function 0x03: Read N register words, range: 1...16
Example: It is necessary to read 2 continuous words starting from communica-
tion register 3000H of the slave frequency converter addressed at 01H. The
frame structure is described in the tables below.
Message start
Transmission time for 3.5 bytes
Slave address
01H
Modbus function code
03H
Higher byte of start address
30H
Lower byte of start address
00H
Higher byte of data
00H
Lower byte of data
02H
CRC lower byte
CBH
CRC higher byte
0BH
Message end
Transmission time for 3.5 bytes
Tab. 14-12: Function 0x03_Request from RTU master
Message start
Transmission time for 3.5 bytes
Slave address
01H
Modbus function code
03H
Bytes of data
04H
Higher byte of data in register 3000H
00H
Lower byte of data in register 3000H
14H
Higher byte of data in register 3001H
00H
Lower byte of data in register 3001H
02H
CRC lower byte
3BH
CRC higher byte
F6H
Message end
Transmission time for 3.5 bytes
Tab. 14-13: Function 0x03_Response from RTU slave
EFC x610 Series
Bosch Rexroth AG
Communication
DOK-RCON03-EFC-X610***-IT05-EN-P
261/389
Содержание EFC 3610 Series
Страница 18: ...Bosch Rexroth AG EFC x610 Series XVI DOK RCON03 EFC X610 IT05 EN P ...
Страница 332: ...Fig 15 15 0020 N 03_0025 N 03 Bosch Rexroth AG Accessories EFC x610 Series 300 389 DOK RCON03 EFC X610 IT05 EN P ...
Страница 333: ...Fig 15 16 0025 A 05 EFC x610 Series Bosch Rexroth AG Accessories DOK RCON03 EFC X610 IT05 EN P 301 389 ...
Страница 336: ...Fig 15 21 0250 N 05 Bosch Rexroth AG Accessories EFC x610 Series 304 389 DOK RCON03 EFC X610 IT05 EN P ...
Страница 421: ...Notes EFC x610 Series Bosch Rexroth AG ...