Modbus – IAI America ROBO Cylinder Series User Manual

Page 271

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6. Modbus

ASCII

263

Modbus

(4) Sample query

[1] A sample query that makes a controller of axis No. 0 jog is shown below.

Query: 01 05 04 17 EF 00 E0

Field

ASCII mode 8-bit data

Converted ASCII

code data [H]

Start

‘:’

3A

Slave address [H]

‘0’, ‘1’

3031

Function code [H]

‘0’, ‘5’

3035

Start address [H]

‘0’, ‘4’, ‘1’, ‘7’

30343137

Changed data [H]

‘F’, ‘F’, ‘0’, ‘0’

46463030

Error check [H]

‘E’, ‘0’ (in accordance with LRC calculation) 4530

End

‘CR’, ‘LF’

0D0A

If the change was successful, the response message will be the same as the query.

[2] A sample query that makes a controller of axis No. 0 inch is shown below.

Query:

First time:

01 05 04 17 FF 00 E0 --- Inching movement

Second time: 01 05 04 17 00 00 DF --- Restore normal status

Field

ASCII mode 8-bit data

Converted ASCII

code data [H]

Start

‘:’

3A

Slave address [H]

‘0’, ‘1’

3031

Function code [H]

‘0’, ‘5’

3035

Start address [H]

‘0’, ‘4’, ‘1’, ‘7’

30343047

Changed data [H]

First time: ‘F’, ‘F’, ‘0’, ‘0’

Second time: ‘0’, ‘0’, ‘0’, ‘0’

(Restore the normal status.)

46463030

30303030

Error check [H]

First time: ‘E’, ‘0’ (in accordance with LRC

calculation)

Second time: ‘D’, ‘F’ (in accordance with

LRC calculation)

4530

4446

End

‘CR’, ‘LF’

0D0A

If the change is successful, the response message will be the same as the query.

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