
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
Bosch Rexroth AG
Communication
VFC 3210
196/253
DOK-RCON04-VFC3210****-IT01-EN-P
Содержание Rexroth VFC 3210
Страница 1: ...Frequency Converter VFC 3210 Operating Instructions R912007862 Edition 01 ...
Страница 18: ...Bosch Rexroth AG VFC 3210 XVI DOK RCON04 VFC3210 IT01 EN P ...
Страница 146: ...Fig 12 23 Stop DC braking Bosch Rexroth AG Functions and Parameters VFC 3210 118 253 DOK RCON04 VFC3210 IT01 EN P ...
Страница 239: ...Fig 15 2 0020 N 03 0025 N 03 VFC 3210 Bosch Rexroth AG Accessories DOK RCON04 VFC3210 IT01 EN P 211 253 ...
Страница 240: ...Fig 15 3 0008 A 05 Fig 15 4 0020 N 05 Bosch Rexroth AG Accessories VFC 3210 212 253 DOK RCON04 VFC3210 IT01 EN P ...
Страница 249: ...Fig 16 3 Assembly of the fan VFC 3210 Bosch Rexroth AG Maintenance DOK RCON04 VFC3210 IT01 EN P 221 253 ...
Страница 280: ...Bosch Rexroth AG VFC 3210 252 253 DOK RCON04 VFC3210 IT01 EN P ...
Страница 281: ...Notes VFC 3210 Bosch Rexroth AG ...