Sinee A90 Series User Manual

User Manual of A90 Series Inverter
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multiple function codes across groups. However, it is recommended not to read them
across groups in the case of no special requirements, so the customer’s software does
not need to be upgraded after our products are upgraded.
12.3.3.2 0x41: function code used to write a single register or command (without
saving)
In the remote terminal unit, this function code is used to write a single non-holding
register.
The request PDU describes the address to be written to the register.
The normal response is the response made to the request, which is returned after the
register content is written.

Request PDU
Function code
1 byte
0x41
Address of register
2 bytes
0x0000 - 0xFFFF
Register value
2 bytes
0x0000 - 0xFFFF

Response PDU
Function code
1 byte
0x41
Address of register
2 bytes
0x0000 - 0xFFFF
Register value
2 bytes
0x0000 - 0xFFFF

Error PDU
Error code
1 byte
0xC1
Exception code
1 byte
See Table 0-4
Below is an example of a request to change the main frequency source A (7001H) to
“-50.00%”:
Request
Respond
Domain name
(0x)
Domain name
(normal)
(0x)
Domain name
(abnormal)
(0x)
Function
41
Function
41
Function
C1
Register address Hi
70
Register address Hi
70
Exception
code
03
Register address Lo
01
Register address Lo
01
Register value Hi
EC
Register value Hi
EC
Register value Lo
78
Register value Lo
78
★ This function code cannot be used to change the parameters of the attribute “○”

Sinee A90 Series Specifications

General

Brand	Sinee
Model	A90 Series
Category	Inverter
Language	English