Function 0x06: Write one register word
CAUTION
Frequent writing may damage the internal registers!
●
When data is written into the internal registers, there is a limit on the writing
times. The register address may be damaged once the writing times is beyond
the writing limit. So please avoid frequent writing!
●
For details of user writing permission, please see
gy and Abbreviation in Parameter List" on page 331
.
Example: Write 0000H to communication register address 3002H of the slave fre-
quency converter with address 01H. The frame structure is described in the ta-
bles below:
Message start
Transmission time for 3.5 bytes
Slave address
01H
Modbus function code
06H
Higher byte of write register address
30H
Lower byte of write register address
02H
Higher byte of write data
00H
Lower byte of write data
00H
CRC lower byte
27H
CRC higher byte
0AH
Message end
Transmission time for 3.5 bytes
Tab. 14-14: Function 0x06_Request from RTU master
Message start
Transmission time for 3.5 bytes
Slave address
01H
Modbus function code
06H
Higher byte of write register address
30H
Lower byte of write register address
02H
Higher byte of write data
00H
Lower byte of write data
00H
CRC lower byte
27H
CRC higher byte
0AH
Message end
Transmission time for 3.5 bytes
Tab. 14-15: Function 0x06_Response from RTU slave
Bosch Rexroth AG
Communication
EFC x610 Series
262/389
DOK-RCON03-EFC-X610***-IT05-EN-P
