Mean Well HEP-2300 Series, Installation Manual, Page: 38 / 42

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◎
SYSTEM_STATUS (0x00C3) ：
◎
SYSTEM_CONFIG (0x00C4)：
Note: Unsupported settings displays with "0"
Bit7
Bit7
Bit6
Bit6
Bit5
Bit5
Bit4
Bit4
Bit3
Bit3
Bit2
Bit2
Bit1
Bit1
Bit0
Bit0
Low byte
Low byte
- -
-
-
- - - -
EEPER
INITIA-
LSTATE
ADL_ON
DC_OK
OPERATION_INI
-
MOD_CTRL
Low byte:
Bit 1 DC_OK：Secondary DD output voltage status
＝Secondary DD output voltage status TOO LOW 0
1＝Secondary DD output voltage status NORMAL
Bit 4 ADL_ON：Active dummy load control status
＝Active dummy load off/function not supported 0
1＝Active dummy load on
Bit 5 INITIAL_STATE：Device initialized status
＝In initialization status 0
1＝NOT in initialization status
Bit 6 EEPER：EEPROM data access error
＝EEPROM data access normal 0
1＝EEPROM data access error
Low byte:
Bit 0
_CTRL：Modbus communication control status MOD
＝The output voltage/current defined by control over SVR/PV/PC 0
1＝The output voltage, current, ON/OFF control defined by control over
Modus (VOUT_SET, IOUT_SET, OPERATION)
OPERATION_INIT：Pre-set value of power on operation command
0b00＝Power OFF, pre-set 0x00(OFF)
0b01＝Power ON, pre-set0x01(ON)
0b10＝Pre-set is previous set value
0b11＝not used, reserved
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0x80 0x03 0x 8C 00 0x 3 000 0xDA31
6.3.7 Communication Examples
The following provides examples of request and response for each
function code of the Modbus RTU.
6.3.7.1 Read Holding Registers (FC=03)
The request message specifies the starting register and quantity
of registers to be read.
For example: the master requests the content of analog output
holding registers 0x008C-0 008E x
(MFR_REVISION_B0B5) from slave 0.
Request:
0x80: Slave ID 0
0x03: Function code 3 (Read Analog Output Holding R Registers)
0x008C: The Data Address of the first register requested.
0x0003: The total number of registers requested ( Read 3 registers from
0x008C 0 008E x to )
0x : sending the Lo byte first DA31 CRC16 Error Check. Please be aware that CRC
.
Response:
0x80: Slave ID 0
0x03: Function code 3 (Read Analog Output Holding R Registers)
0x06: The number of data bytes to follow (6 bytes)
0x0A FF FF FF FF FF: means that the firmware version of the MCU number1
is R01.0.
0x : sending the Lo byte 7DEC CRC16 Error Check. Please be aware that CRC
first .
0x80: Slave ID 0
0x0 : Function code 4 (Read Analog Input Registers)
4
0x0060: The Data Address of the first register requested
0x0001: he total number of registers requested ( read only 1 registers from
0x0060 )
0x2FC5: sending the Lo byte first CRC16 Error Check. Please be aware that CRC .
6.3.7.2 Read Input Register (FC=04)
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 ( ) from salve 0 0x0060 READ_VOUT
Request:
70
0x80 0x03 0x06 0x0AFFFFFFFFFF 0x7DEC
0x80 0x04 0x0 6 0 0 0x 1 000 0x2FC5
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