B&K Precision 1785B - Manual - Manual (Page 26)

26
9
th
byte Byte 3 of measured output voltage
10
th
byte Power supply’s state
11
th
byte Byte 0 of current value setting (current limit value)
12
th
byte Byte 1 of current value setting
13
th
byte Byte 0 of the maximum voltage setting
14
th
byte Byte 1 of the maximum voltage setting
15
th
byte Byte 2 of the maximum voltage setting
16 th byte Byte 3 of the maximum voltage setting
17
th
byte Byte 0 of voltage value setting
18
th
byte Byte 1 of voltage value setting
19
th
byte Byte 2 of voltage value setting
20
th
byte Byte 3 of voltage value setting
21
st
to 25
th
byte System reserve
26
th
byte Check sum
8. Entering the calibration mode（0x27)
1
st
byte Start bit(0xAA)
2
nd
byte Address(0x00~0xFE)
3
rd
byte Command(0x27)
4
th
byte Calibration protection state
5
th
byte Calibration password(0x28)
6
th
byte Calibration password(0x01)
7
th
to 25
th
byte System reserve
26
th
byte Check sum
Note:
1. We use 4 bytes to represent the maximum voltage value as follows:
Byte 3 Byte 2 Byte1 Byte0
2. We use 1 byte to represent power supply’s state. Each bit is defined as
follows:
From higher bit to lower bit
7 6 5 4 3 2 1 0
0 bit：The output state, 0 is OFF, 1 is ON.
1 bit：Over heat protection, 0 is normal, 1 is abnormal.
2、3 bit: The output mode, 1 is CV mode, 2 is CC mode,3 is Unreg mode.
4、5、6 bit：The fan speed, 0 is stop, 5 is the maximum fan speed.
7 bit：Operation state, 0 is front panel operation mode, 1 is remote control
mode.
3. The frame format is the same as above