Ebyte E150-400T30S User Manual page 29

Chengdu Ebyte Electronic Technology Co.,Ltd.
Input pin
ADC1
ADC2
ADC3(internal connection)
ADC4
ADC5
Register function
ADCInteger value
ADC2Integer value
ADC3Integer value
ADC4Integer value
ADC5Integer value
 The user can select the data format through different MODBUS addresses

When reading floating-point numbers, two MODBUS registers must be read continuously
 Use 04 function code to read one or more input register values
For example, 1: to read the current floating-point voltage value (power supply voltage) of adc3, two registers
must be read continuously
01
Device MODBUS Function
address code
Note:
T
he CRC check code of the last two bytes of the sending instruction needs to be calculated by the user.Serial
port sending: 01 04 00 CC 00 02 B1 F4
Remote wireless transmission: 01 04 00 CC 00 02 B1 F4
After sending the above command to the device via serial port or wireless, the device will return the following
values to the serial port or wireless:
01
Device MODBUS Function
address code
Phenomenon: the value of the return power supply voltage is 4.18425V (floating-point type
Serial port receive return value: 01 04 04 40 85 E5 5E 35 00
Remote wireless reception return value: 01 04 04 40 85 E5 5E 35 00
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Power supply voltage acquisition terminal (VCC supply voltage)
MODBUS address
0x0064
0x0065
0x0066
0x0067
0x0068
04 00 CC
Register
first
address
04 04
Number of
bytes of data
function
Voltage acquisition input 1
Voltage acquisition input 2
Current acquisition input 1 (single-ended input)
Current acquisition input 2 (single-ended input)
Register function
ADC1floating point value
ADC2floating point value
ADC3floating point value
ADC4floating point value
ADC5floating point value
00 02
Number of
registers read
40 85 E5 5E
Returned data
E150-400T30S user manual
MODBUS address
0x00C8
0x00CA
0x00CC
0x00CE
0x00D1
B1 F4
CRC check
code
35 00
CRC check
code
4085 E55E
).
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