BK Precision 1785B User Manual

24
4.4 Communication protocol
1．Setting the remote control mode (0x20)
1
st
byte
Start bit( 0xAA )
2
nd
byte
Address(0x00~0xFE)
3
rd
byte
Command （0x20）
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
2．Setting the output state ON/OFF (0x21)
1
st
byte
Start bit (0xAA )
2
nd
byte
Address(0x00~0xFE)
3
rd
byte
Command (0x21)
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．Setting the maximum output voltage (0x22)
1
st
byte
Start bit (0xAA )
2
nd
byte
Address(0x00~0xFE)
3
rd
byte
Command (0x21)
4
th
byte
The lowest byte of voltage upper limit (1 represents 1 mV)
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:
Suppose you want to set the maximum voltage to 16.23 V. Since 1
represents 1mV, therefore 16.23 V translates to 16,230 in decimal. With 4 bytes in
Hex, that would be 0x0003F66. Since the bytes are ordered in little-endian format,
0x66 would be the 3
rd
byte, 0x3F the 4
th
byte, 0x00 as 5
th
byte, and 0x00 as the 6
th
byte.
Note: You cannot control the power supply from the front panel when
the power supply is in calibration mode.

BK Precision 1785B Specifications

General

Brand	BK Precision
Model	1785B
Category	Power Supply
Language	English