Veichi AC90 Manual page 186

AC90 TENSION CONTROL FREQUENCY INVERTER MANUAL
Command code: 06H, write a word (Word)
Function: write a word data in the designated data address. It can be used to revise the frequency inverter parameters.
For instance: 5000 (1388 H) is written into the 3000H address of slave frequency inverter with address 1. Then the
structure of this frame is described as follows:
RTU host machine order information
START
Slave machine address
Command code
Write data address high-order
Write data address low-order
Data content high-order
Data content low-order
CRC CHK low-order
CRC CHK high-order
EBD
RTU Slave machine responding information（normal）
START
Slave machine address
Command code
Write data address high-order
Write data address low-order
Data content high-order
Data content low-order
CRC CHK low-order
CRC CHK high-order
EBD
RTU Slave machine responding information（abnormal）
START
Slave machine address
Command code
Error code
CRC CHK low-order
CRC CHK high-order
END
Command code: 08H, circuit auto-detection
Function: Send back the slave machine responding information which is identical with the host machine command
information. It is used to check whether the signal transmission between the host machine and slave machine is regular
or not. The checking code and the data can be set freely.
BASIC OPERATION AND TRIAL RUN
Transmission time of 3.5 bytes
Transmission time of 3.5 bytes
Transmission time of 3.5 bytes
01H
06H
30H
00H
13H
88H
8BH
9CH
Transmission time of 3.5 bytes
Transmission time of 3.5 bytes
01H
86H
01H
83H
A0H
Transmission time of 3.5 bytes
181
01H
06H
30H
00H
13H
88H
8BH
9CH