Mean Well LAD Series, Руководство пользователя

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5.4.2.5 Single cell battery voltage
Brief description: Battery voltage read instructions
For example: to read the voltage of a single cell connected to the
LAD-360DU
Request:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x03 0x00 50 0xB8
0x55 R/W byte R/W 0x55 : , decision bit, for reading instructions are
0x03 Data Length R/W : , the length of the data after the decision bit
I 0x00 50 0xB8 3 bytes n this instruction , occupy a total of , so it is
3 bytes
0x00 50 Data address bytes 0x00 : , the data address to be transmitted,
50 is the single-cell battery voltage address
0xB8 CRC-8 CRC-8 : Transmit data error code, refer to the description of
in , for which instruction is 0xB8 5.4.1.3 the
Response:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x11 0x00 50 0x04 F0 04 F2 05 0C 05 10 0xAA
0x55 R/W byte R/W 0x55 : , decision bit, for reading instructions are
0x11 Data Length R/W : , the length of the data after the decision bit
0x00 50 0x04 F0 04 F2 05 0C 05 10 0xAA 11 , , occupy a total of
bytes 0x11 , so it is
0x00 50 The , 0x00 50 : data address transmitted by LAD is the single-cell
battery voltage address
0x04 F0 04 F2 05 0C 05 05 10 Data bytes lad : , transmitted data content,
this is the actual reading value of a single
cell voltage, occupying (each 8 bytes
battery , from left to right occupies 2 bytes
is battery 1 to 4).
Convert to decimal:
04 F0：1264
04 F2：1266
05 0C：1292
05 10：1296
Check the , and the corresponding unit of this command is table 5.4.1.5
0.01V 12.64V 12.66V 12.92V , that is, the voltage of the four batteries is , , ,
and 12.96V, respectively
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0xAA CRC-8 : Transmit data error detection code, refer to the description
of in CRC-8 5.4.1.3
The error detection code for the response is calculated by the CRC-8 LAD
LAD's own MCU
5.4.2.6 Battery undervoltage protection points
Brief description: Battery undervoltage protection point read instructions
For example: to read t
LAD- he battery voltage protection point of the
360DU
Request:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x03 0x00 60 0x28
0x55 R/W byte R/W 0x55 : , decision bit, for reading instructions are
0x03 Data Length R/W : , the length of the data after the decision bit
0x00 60 0x28 occupies 0x03 , a total of 3 bytes, so it is
0x00 60 Data address bytes 0x00 60 : , the data address to be transmitted,
is the address of the battery undervoltage protection point
0x28 CRC-8 : Transmit data error detection code, refer to the instructions
on in , for which instruction is 0x28 CRC-8 5.4.1.3 the
Response:
R/W byte Data Length Data address bytes Data bytes CRC-8
0x55 0x05 0x00 60 0x0E E8 0x0D
0x55 R/W byte R/W 0x55 : , decision bit, for reading instructions are
0 , the length of the data after the decision bit x05: Data Length R/W
0x00 60 0x0E E8 0x0D 5 bytes 0x05 , , occupy a total of , so it is
0x00 60 Data address bytes LAD 0x00 60 : , the data address transmitted by ,
is the address of the battery undervoltage protection point
0x0E E8: Data bytes lad , transmitted data content, this is the actual
reading value of the battery undervoltage protection point
0x0E E8 c 3821 the orresponds to the decimal number of , check
5.4.1.5 table, you can get the corresponding unit of this
command is , that is, the battery undervoltage protection 0.01V
point at this time is 3821 * 0.01V = 38.21V
0x0D CRC-8 : Transmit data error detection code, refer to the description of
CRC-8 5.4.1.3 in
The error detection code for the response is calculated CRC-8 LAD
by the LAD's own MCU
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