Atrix APS-4000 Series, User Manual

1. The data format of the power supply response to the host computer:

Device number 

ID (1 byte) + 

command code 

(1 byte) + 

operation code 

(1 byte) + 

data 

(4 byte) + 

check

code 

(1 byte)

Device 

ID

1-28

ID 

number corresponding to each 

inverter power supply

Command 
code

ASCII

HEX

R '

0x52

Read response

W

0x57

Write response

Opcode

There is a detailed description later

Operation object

data

The low byte is in the front, the high bytes are in the 
back, there is a detailed description later

4-

byte data returned

Check code

Sum of the first 

7 

bytes of data

Note: The power supply will not return the response command after receiving the software reset command.

2. Instructions

Opcode

Function 
Description

the data shows

Meaning of 
reading data

Write data meaning

0x30

Output 
status

byte

Whether the current is overloaded

1 : 

Current 

overload

0 : 

normal

0 : 

clear current overload 

sign

Byte 

1

Power failure alarm

1 : 

Power failure

0 : 

normal

1: 

Reset to clear the 

alarm mark

Byte 

2

Is it currently in high-end or low-end

1: 

high-end

0: 

low gear

be ignored

Byte 

3

Whether to output

1: 

output

0 : 

No output

be ignored

0x31

Target 
frequency

Frequency value of 

4 

bytes, unit 

0.1 H 

B 

range

450-1200

Current 
frequency value

Updated frequency value

0x32

High-end 
target 
voltage

4 

-byte value of the voltage, the unit 

of 0. 

The 1V, 

range

0-3000

Current voltage 
value

The updated voltage 
value, if it was low gear 
before, it will also switch 
to high gear

0x33

Automatic 
target 
voltage

4 

-byte value of the voltage, the unit 

of 0. 

The 1V, 

range

0-3000

Current voltage 
value

The updated voltage 
value will switch between 
high and low gears 
according to the value of 
the set voltage. The 
standard for the switch is: 
set the voltage to 

1500 

to 

upshift, otherwise low