Ebyte 8DO, User Manual

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Chengdu Ebyte Electronic Technology Co.,Ltd.
【
8DO
】
MA01 -XXCX0080 User Manual
Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
33
20 05 00 00 FF 00 XX XX
Device Modbus
address
The function
code
Register address
Write the value
Coil action: On
CRC check code
When the above command is sent to the device via the 485 bus, the device returns the following values:
20 05 00 00 FF 00 XX XX
Device Modbus
address
The function
code
Register address Write the value CRC check code
DO1 coil on.
7.2.6 Write multiple DO coil states
Use the 0F function code to write a single command, for example, set do1 to pulse mode
20 0F 00 00 00 04 01 06 XX XX
Device Modbus
address
The
function
code
The starting
address
The number of
coils
The number
of bytes of
the data
Control the
data for the
coil
(bit operation)
CRC check
code
When the above command is sent to the device via the 485 bus, the device returns the following values:
20 0F 00 00 OO O4 XX XX
Device Modbus
address
The
function
code
Register address The number of coils
CRC check
code
DO2, DO3 coil on.