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

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)

23