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01
functi
Device Modbus
address
code
Note:
The CRC check code of the last two bytes of the sending instruction needs to be calculated by the user.
Serial port sending: 01 0F 00 00 04 01 0F 7E 92
Remote wireless transmission: 01 0F 00 00 00 04 01 0F 7E 92
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: DO1 ~ D04 output high level.
Serial port receiving return value: 01 0F 00 00 00 04 C8 3F
Remote wireless reception return value: 01 0f 00 00 00 04 C8 3F
I
n addition to this, do also has two controllers, which are used to control whether the last state needs
to be restored after power on
DOPower-on hold
0x0000(default)
When the do power on holding register is 0x0001, flash will be updated every time the user changes the do status
register.
If the customer needs to change the do status register frequently, it is not recommended to turn on this function
to avoid reducing the service life of the module.
8.3 Analog Input (AI)
E
150-400T30S has 5 analog input pins (AI), including 2 voltage acquisition, 1 power voltage acquisition
and 2 current acquisition.
The voltage acquisition circuit integrates the voltage follower and voltage dividing circuit as well as
the external reference voltage to ensure the accuracy of the measurement results.
T
he reference voltage is 3.0V. When the module power supply voltage is less than 3V, the reference voltage
will shift with the power supply voltage, which makes it impossible to measure.
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0F
00 00
initial
on
address
0F
00 00
register address
0x0001
00 04
01
Number
number of
of coils
bytes of data
Number of coils
After the module is reset, the DO output state
DO power-on state (coil)
E150-400T30S user manual
0F
number of
control coils
data (bit
operation)
00 04
CRC check
depends on
DO state (coil)
27
7E 92
CRC check
code
C8 3F
code
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