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2
nd
byte Address (0—0XFE)
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
NOTE
Front panel operation state is not in effect if electronic load is in calibration mode.
2. Selecting the input on/off state
（
（（
（
21H
）
））
）
1
st
byte Start bit ( AAH )
2
nd
byte Address(0—0XFE)
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. Setting / Reading max input voltage
（
（（
（
22H/23H
）
））
）
1
st
byte Start bit ( AAH )
2
nd
byte Address (0—0XFE)
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.
NOTE
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 0X00003EB0
，
then
the 4th byte is 0XB0
，
5th byte is 0X3E
，
6th byte is 0X00
，
7TH byte is 0X00.
4. Setting / Reading the max input current .
（
（（
（
24H/25H
）
））
）
1
st
byte Start bit ( AAH )
2
nd
byte Address(0—0XFE)