User Manual
EM303B General Purpose Inverter
179
Command code 0x08: Circuit Diagnosis and Setting
ADU Item
Byte No.
Range
Master requests:
Address of slave
1
0
~
127
Command code
1
0x08
Sub-function code
2
0x0000
~
0xFFFF
Register data
2
CRC parity
2
Slave responds:
Address of slave
1
Inverter address
Command code
1
0x08
Sub-function code
2
0x0000
~
0xFFFF
Register data
2
CRC parity
2
Remarks:
Command code 0x08 is only for circuit check.
13.5
Description of Protocol Format
13.5.1
Address Code
Address of slave inverter. The setting range: 1~247, 0 is broadcast address.
13.5.2
Command Code
Command Code
Function
03H
Read parameters and status byte of inverter
06H
Write single function code or control parameter of inverter
10H
Write several function codes or control parameters of inverter
08H
Circuit diagnosis and setting
13.5.3
Allocation of Register Addresses
Name
Address
Description
Function
Code
0000H
~
1F1FH
(Saving
Address)
High byte is the function code group number. F0
~
F
F
, C0,
and E0 are corresponding to high bytes: 00H
~
0FH, 10H, and
11H respectively.
Low byte is serial number of function code group. 0~31
corresponding to low bytes 00H~1FH. For example: the
corresponding saving address of F0-0
6
is 000
6
H.
The saving address is prohibited for the function codes which
are modified frequently. Otherwise, the EEPROM of inverter
may be damaged, and inverter will trip fault EEd.
2000H
~
3F1FH
(Temporary
Saving Address)
For frequent modified function codes, the function code
address +2000H is to prevent EEPROM of inverter from
being damaged. Due to frequent modification, the value of
this function code will not be saved at power failure.
For example, the temporary saving address of F0-06 is