ITech IT8500plus Series Manual

13
Communication Protocol
1. Set control mode（20H）
1
st
byte
Start bit ( AAH )
2
nd
byte
Address (0—31,0XFF)
3
rd
byte
Command（20H）
4
th
.byte
Operation mode（0 is front panel operation mode ，1 is remote operation mode ）
From 5
th
to 25
th
byte
System reserve
26
th
byte
Sum code
Front panel operation state is not in effect if electronic load is in calibration mode.
2. Set the input on/off state （21H）
1
st
byte
Start bit ( AAH )
2
nd
byte
Address(0—31,0XFF)
3
rd
byte
Command（21H）
4
th
byte
Input state（0 is OFF，1is ON）
From 5
th
to 25
th
byte
System reserve
From26
th
byte
Sum code
3. Set / Read max input voltage（22H/23H）
1
st
byte
Start bit ( AAH )
2
nd
byte
Address (0—31,0XFF)
3
rd
byte
Command（22H/23H）
4
th
byte
The Lowest byte of max voltage value
5
th
byte
The lower byte of max voltage value.
6
th
byte
The higher byte of max voltage value.
7
th
byte
The highest byte of max voltage value.
From 8
th
to 25
th
byte
System reserve.
26
th
byte
Sum code.
Represent a voltage upper limit value by 4 bytes of Hex. Lower bytes are in the front location, higher
bytes are in the later location. 1 represent 1mV.For Example : The voltage upper limit is 16.000V，
the hex code is 0X00003E80，then the 4th byte is 0X80，5th byte is 0X3E，6th byte is 0X00，7TH
byte is 0X00.
4. Set / Read the max input current .（24H/25H）
1
st
byte
Start bit ( AAH )
2
nd
byte
Address(0—31,0XFF)
3
rd
byte
Command（24H/25H）
NOTE
NOTE

ITech IT8500plus Series Specifications

General

Brand	ITech
Model	IT8500plus Series
Category	Test Equipment
Language	English