Autonics KPN Series, User Manual For Communication

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1 Modbus RTU protocol
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1.6 Preset Multiple Registers(Func16–10H)
Write the Binary data of Holding Registers (4X reference) consecutively in Slave device.
(1) Query(Master)
Slave
Address
Function
Starting
Address
No. of Register
Byte Count
Data Data
Error Check
(CRC16)
High Low High Low High Low High Low Low High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
(2) Response(Slave)
Slave Address Function
Starting Address No. of Register Error Check(CRC16)
High Low High Low Low High
1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte 1Byte
If write
“10(
A H
)”
in common to the range of Holding Register
400001(0000
H
)
to
400
002(0001
H
)
on Slave side
(
Address
17)
from Master side.

Query(Master)
Slave
Address
Function
Starting
Address
No. of Register
Byte Count
Data Data
Error Check
(CRC16)
High Low High Low High Low High Low Low High
11 H 10 H 00 H 00 H 00 H 02 H 04 H 00 H 0A H 00 H 0A H ## H ## H

Response(Slave)
Slave Address Function
Starting Address No. of Register Error Check(CRC16)
High Low High Low Low High
11 H 10 H 00 H 00 H 00 H 02 H ## H ## H
Please use the Single Register Write function rather than Multi Register Write function if
you use the slave(device) connecting with external devices such as PLC, Graphic Panel,
except in the case of download that presets the minimum/maximum or basic value of
parameter by Input specifications in PC Loader Program.
CRC16
CRC16