Appendix 3 Communication Protocol 115
EV2000 Series Universal Variable Speed Drive User Manual
5.2 Address of Slave
Definition of Data: the slave’s address. two bytes, ASCII format.
Configuration range: “00”~”7F”. “7F” is broadcast address. The default of the drive is “01”.
5.3 Response of Slave to Master’s Command
Definition of Data: The response of slave to the command from the Master. Two Bytes. ASCII Format.
Classification of Parameters:
Command Code = “00”: Master drive asks Slave drive to feed back the current status(ready or not ready) and control
status.
Table A-6 Meaning of response code given command code “00”
Response
Code ASCII
Meaning
Ready or not ready status of
slave drive
Master drive control enabled Setting frequency enabled
10 Not Ready No meaning
11 Ready Enabled Enabled
12 Ready Enabled Disabled
13 Ready Disabled Enabled
14 Ready Disabled Disabled
20 Frame wrong
Command Code＝"01"～"08"
Response Code＝“00” means:
Communication and control of slave are normal. The changes of parameters are valid. The password is correct.
Response Code
＝“20” means:
The frame is verified to be incorrect. The data of “Command Section” and “Index Section overflow.
Incorrect Frame length/there are non-ASCII code except frame head and frame tail.
Note: Whether the response code reported is related with the current configuration status of the slave. Refer to the
notes of “command code = 5”. When reporting the response code, data in “command section”, “index section” and
“operation data section” will not be reported.
Response Code
＝ “30” means:
The control command to the slave is inactive. The changes of parameters are invalid. The data in
“configuration/operation data” section overflow. The password is incorrect.
Note: Whether the response code is reported is related with the current configuration status of the slave. Refer to the
notes of “command code = 5”. When reporting the response code, data in “command section”, “index section” and
“operation data section” will be reported according to the requirements of the protocol.
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