ITech IT6821 Programming Guide

Communication protocol
Copyright © Itech Electronic Co., Ltd. 4
Chapter3 Communication protocol
3.1 Setting the Remote Control Mode (20H)
1
st
byte
Start bit (AAH)
2
nd
byte
Address (0 to 0XFE)
3
rd
byte
Command (20H)
4
th
byte
Operation mode (0 represent front panel operation mode,
1 represent remote operation mode)
5
th
to 25
th
byte
System reserve
26
th
byte
Check sum
Note
You cannot control the power supply from the front panel when the power supply is in
calibration mode.
3.2 Setting the Output State ON/OFF (21H)
1
st
byte
Start bit (AAH)
2
nd
byte
Address (0 to 0XFE)
3
rd
byte
Command (21H)
4
th
byte
Output state (0 is OFF, 1 is ON)
5
th
to 25
th
byte
System reserve
26
th
byte
Check sum
3.3 Setting the Maximum Output Voltage (22H)
1
st
byte
Start bit (AAH)
2
nd
byte
Address (0 to 0XFE)
3
rd
byte
Command (22H)
4
th
byte
The lowest byte of voltage upper limit
5
th
byte
The lower byte of voltage upper limit
6
th
byte
The higher byte of voltage upper limit
7
th
byte
The highest byte of voltage upper limit
8
th
to 25
th
byte
System reserve
26
th
byte
Check sum
Note
We use 4 bytes of Hex number to represent a maximum voltage value. For example the
maximum voltage is 16.000V, the hex code of 16.000 is 0X00003E80, so the 4th byte is
0X80, 5th bye is 0X3E, 6th byte is 0X00, 7th byte is 0X00.
3.4 Setting the Output Voltage (23H)
1
st
byte
Start bit ( AAH)
2
nd
byte
Address (0 to 0XFE)
3
rd
byte
Command (23H)
4
th
byte
The byte 0 of output voltage value
5
th
byte
The byte 1 of output voltage value

ITech IT6821 Specifications

General

Brand	ITech
Model	IT6821
Category	Power Supply
Language	English