Write A Single Hold Register; Write About Multiple Hold Registers - Ebyte MA02-XXCX0080 User Manual

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After sending the above command to the device via RS232, the device returns the following values：
20
Device
Modbus
address
The above 00 00 indicates the DO1 as a level mode.

7.2.3 Write a single hold register

Write a single hold register using the 06 function code,For example, set the working mode of the
DO1 to the pulse mode
20
Device
Modbus
address
After sending the above command to the device via RS232, the device returns the following values：
20
Device
Modbus
address
If the modification is successful,The 0x0578 register data is 0x0001.

7.2.4 Write about multiple hold registers

Write multiple hold-register commands using the 10 function code,For example, set the DO1-DO4
working mode for DO1-DO4.
20
Device
Modbus
address
After sending the above command to the device via RS232, the device returns the following values:：
20
Device
Modbus
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03 02
Number of bytes of
FC
the data
06 05 78
FC Register start address
06 05 78
FC Register start address
10 05 78
Register
FC start
address
10 05 78
Register
FC
start
00 00
The state data that
was returned
00 01
Write to the value
00 01
Write to the value
00 04 08
Number of
Number
bytes
of
written to
registers
the data
00 04
Number of registers
【8DO】MA02-XXCX0080 User Manual
XX XX
CRC checkcode
XX XX
CRC checkcode
XX XX
CRC checkcode
0001 0002 XX XX
CRC
Written data
checkcode
XX XX
CRC
checkcode
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