Powtran PI8600 Series - The Basic Format Description; Function Code Categories

To Next Page

To Previous Page

Appendix I

115

Appendix I

PDU

ADU

Frame Starter

Address Field

Function code

Data

CRC Checksum

Frame End

The basic format description

I-4-1. Start of frame, End of frame

interval≧3.5 bytes

I-4-2. Slave Address

From the machine's local address, through the A28 parameter settings, one network can only

one local address uniquely identifed.

Setting range 1 ~ 127.

00H = 0 ID address is broadcast mailing address, 128 ~ 255 reserved.

I-4-3. Function Code

Host send commands, slave response.

● Function Code Categories

0x03＝read inverterp’s multiple function codes, at most can read 16 registers(register pair of byte)

Host Command

Frame Start

address

Slave Address

Function

code

Registers address

number

CRC

Checksum

Frame end

address

≥3.5 bytes

1 bytes

2 bytes

≥3.5 bytes

Slave response

Frame Start

address

Slave Address

Function

code

Read byte

Read content

CRC

Checksum

Frame end

address

≥3.5 bytes

1 bytes

2bytes*register

number

2 bytes

≥3.5 bytes

Note: Read content=2 bytes x register number

0x06＝write into inverter 1 function code

Host Command

Frame Start

address

Slave Address

Function

code

Registers

address

number

CRC

Checksum

Frame end

address

≥3.5 bytes

1 bytes

2 bytes

≥3.5 bytes

Slave Response

Frame Start

address

Slave Address

Function

code

Registers

address

number

CRC

Checksum

Frame end

address

≥3.5 bytes

bytes

2 bytes

≥3.5 bytes

Main Page

Powtran PI8600 Series - The Basic Format Description; Function Code Categories

Table of Contents

Related product manuals