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User Manual of A90 Series Inverter

279

The main diagnosis function used by our company is line diagnosis (0000), which

is used to test the normal communication between the host and slave.

The normal

response to a request to return query data is to return the same data. At the same time, the

function codes and sub-function codes are also copied.



Request PDU

Function code

1 byte

0x08

Sub-function code

2 bytes

0x0000 - 0xFFFF

Data

2 bytes

0x0000 - 0xFFFF



Response PDU

Function code

1 byte

0x08

Sub-function code

2 bytes

0x0000 - 0xFFFF

Data

2 bytes

0x0000 - 0xFFFF



Error PDU

Error code

1 byte

0x88

Exception code

1 byte

See Table 0-4



Sub-function code

Sub-fun

ction

Meaning

Data field

(request)

Data field

(response)

0000

Return query

data

Any

Copy request

data

…

0000

: return the data transferred in the request data field in the response. All messages

should be consistent with the request message.

The following table is an example of requesting the remote terminal unit to return

query data. The sub-function code 0000 is used. The returned data is sent in the two-byte

data field (0xA537).

Request

Respond

Domain name

(0x)

Domain name

(normal)

(0x)

Domain name

(abnormal)

(0x)

Function

Sub-function code Hi

Sub-function

code Hi

Exception

code

Sub-function code Lo

Sub-function

Brand	Sinee
Model	A90-4T5R6B
Category	Inverter
Language	English

Sinee A90-4T5R6B User Manual

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