Mean Well DRS Series, Руководство пользователя, Страница: 21 / 35

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Low byte:
Bit 0 MOD_CTRL： Modbus control status （Not support）
0＝SVR
1＝Modbus (VOUT_SET, IOUT_SET, OPERATION)
Bit 1:2 OPERATION_INIT： Pre-set value of power on operation command
0b00＝ Power OFF, pre-set 0x00(OFF)
0b01＝ Power ON, pre-set 0x01(ON)
0b10＝ Pre-set is previous set value
0b11＝ Reserved, currently not in use
Bit 3:7 Reserved： Currently not in use, retain (default is 0)
High byte:
Bit 0:7 Reserved： Currently not in use, retain (default is 0)
Note: Not support settings display with “0”
◎
UPS_CONFIG 0x00D2 ( )：
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Low byte
Time_ UPS_
OFF_EN
Life_
Test_EN
f_EN Buf
High byte
Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
Reserved Reserved Reserved Reserved Reserved
Low byte:
Bit 0 Life_Test_EN： Battery self-test function
0＝ OFF
1 (default) ＝ ON
Bit 1 UPS_OFF_EN： Force start state via button to shut down
0 (default) ＝ OFF
1＝ ON
Bit 2 Time_Buff_EN： Time_Buffering setting function
0 (default) ＝ OFF
1＝ ON
Bit 3:7 Reserved： Currently not in use, retain (default is 0)
High byte：
Bit 0:7 Reserved： Currently not in use, retain (default is 0)
Note: Not support settings display with “0”
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5.4.2 Communication examples
The following provides examples of request and response for each
function code of the Modbus RTU.
5.4.2.1 Read Holding Register FC=03 （ ）
The request message specifies the starting register and quantity
of registers to be read.
Request:
0x83 0x03 0x00 80 0x00 06 0xDA 02
0x83 Slave ID 3 ：
0x03 Function code 3 ： （Read analog output holding R registers）
0x00 80： The data address of the first register requested
0x00 06： The total number of registers requested（Read 6 registers
0x0080~ 0x0085）
0xDA 02： CRC-16 error check. Please be aware that CRC sending the
low byte first.
For example: the master requests the content of analog output
holding registers 0x0080~0x0085 (MFR_ID_B0B5,
MFR_ID_B6B11) from slave 3.
Response：
0x4D 45 41 4E 57 45
0x83 Slave ID 3 ：
0x03 Function code 3 ： （Read analog output holding R registers）
0x0C： The number of data bytes to follow（12 bytes）
0x4D 45 41 4E 57 45 4C 4C 20 20 20 20： means that the manufacture
name of the slave is MEAN
WELL
0x4A 8C: CRC-16 error check. Please be aware that CRC sending the
Low byte first.
0x83 0x03 0x0C 0x4A 8C
5.4.2.2 Read Input Register FC=04 （ ）
4C 4C 20 20 20 20
The request message specifies the starting register and quantity of
registers to be read.
For example: The master requests the content of analog input
register 0x0060（READ_VOUT） from slave 3.