Salicru CV30, User Manual, Page: 117 / 140

Communication protocol 117 - 140
If there is one figure behind the radix point in the setting range or the default value, then the fieldbus ratio
value is 10. If the data received by the upper monitor is 50, then the “hibernation restore delay time” is 5.0
(5.0=50÷10).
If Modbus communication is used to control the hibernation restore delay time as 5.0s. Firstly, 5.0 can be
magnified by 10 times to integer 50 (32H) and then this data can be sent.
After the inverter receives the command, it will change 50 into 5 according to the fieldbus ratio value and
then set the hibernation restore delay time as 5s.
Another example, after the upper monitor sends the command of reading the parameter of hibernation
restore delay time ,if the response message of the inverter is as following:
Because the parameter data is 0032H (50) and 50 divided by 10 is 5, then the hibernation restore delay time
is 5s.
7.4.4 Fault message response
There may be fault in the communication control. For example, some parameter can only be read. If a writing
message is sent, the inverter will return a fault response message.
The fault message is from the inverter to the master, its code and meaning is as below:
Code Name Meaning
01H Illegal command
The command from master can not be executed. The reason maybe:
1. This command is only for new version and this version can not realize.
2. Slave is in fault state and can not execute it.
02H
Illegal data
address
Some of the operation addresses are invalid or not allowed to access.
Especially the combination of the register and the transmitting bytes are
invalid.