11th byte

To set the low byte of current value

12th byte

To set the high byte of current value

13th byte

Byte 0 of the maximum voltage value

14th byte

Byte 1 of the maximum voltage value

15th byte

Byte 2 of the maximum voltage value

16th byte

Byte 3 of the maximum voltage value

17th byte

Byte 0 of output voltage value

18th byte

Byte 1 of output voltage value

19th byte

Byte 2 of output voltage value

20th byte

Byte 3 of output voltage value

21st to 25th byte

System reserve

26th byte

Check sum

Note:

1. We use 4 bytes to represent the maximum voltage value as follows: Byte 3 Byte 2 Byte1 Byte

0

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

 

8. Entering the calibration mode( 27H)

 

 

 

mode.

 

 

3. The frame format is the same as above

 

 

1st byte

 

 

Start bit(AAH)

 

 

 

 

 

 

 

 

2nd byte

 

 

Address(0~0XFE)

 

 

 

 

 

 

 

 

 

 

 

3rd byte

 

 

Command(27H)

 

 

4th byte

 

 

Calibration protection state

 

 

5th byte

 

 

Calibration password(0X28H)

 

 

6th byte

 

 

Calibration password(0X01H)

 

 

7th to 25th byte

 

 

System reserve

 

 

26th byte

 

 

Check sum

 

Note:

We use a byte to represent calibration protection state, each bit is defined as follows:

from higher bit to lower bit

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

0 bit: Protection state, 0 is to disable protection, 1 is to enable the protection.

9. Reading the calibration state (28H)

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B&K 1787B, 1786B, 1788, 1785B instruction manual Entering the calibration mode 27H, Reading the calibration state 28H