REXROTH EFC 3610 Series User Manual

Function 0x08: Diagnostics
Example: To test the communication loop of 2 continuous words 1234H and
5678H with frequency converter slave address 01H, the frame structure is de-
scribed in the tables below:
Message start Transmission time for 3.5 bytes
Slave address 01H
Modbus function code 08H
Higher byte of sub-function 00H
Lower byte of sub-function 00H
Higher byte of test word 1 12H
Lower byte of test word 1 34H
Higher byte of test word 2 56H
Lower byte of test word 2 78H
CRC lower byte 73H
CRC higher byte 33H
Message end Transmission time for 3.5 bytes
Tab. 14-16: Function 0x08_Request from RTU master
Message start Transmission time for 3.5 bytes
Slave address 01H
Modbus function code 08H
Higher byte of sub-function 00H
Lower byte of sub-function 00H
Higher byte of test word 1 12H
Lower byte of test word 1 34H
Higher byte of test word 2 56H
Lower byte of test word 2 78H
CRC lower byte 73H
CRC higher byte 33H
Message end Transmission time for 3.5 bytes
Tab. 14-17: Function 0x08_Response from RTU slave
EFC x610 Series Bosch Rexroth AG
Communication
DOK-RCON03-EFC-X610***-IT05-EN-P
263/389

REXROTH EFC 3610 Series Specifications

General

Brand	REXROTH
Model	EFC 3610 Series
Category	DC Drives
Language	English