REXROTH EFC 3610 Series User Manual

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
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REXROTH EFC 3610 Series Specifications

General

Brand	REXROTH
Model	EFC 3610 Series
Category	DC Drives
Language	English