Baldor Modbus Plus Bedienungsanleitung PDF herunterladen (Seite 24)

20 Modbus RTU MN744

Text Handling Continued

Read Units Text

(Sub-Code 9)

This PDU is used to read units text from the control card.

Request PDU

Byte 1

Byte 2 Byte 3

Function Code (66) Sub-Code (9) Units Test ID

Where,

Byte 1: Text Handing Function Code 66 (0x42)

Byte 2: Read Units Text Sub-Code

Byte 3: Units text ID as defined in parameter configuration PDU

Response PDU:

Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte N

Function Code (66) Sub-Code (9) Units Test ID ASCII ASCII NULL

Where,

Byte 4-N: Up to three character units text

Language independent

Write List Parameter Text (Sub-Code 10)

This PDU is used to write list parameter text to the control card.

Request PDU

Byte 1

Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 . . . Byte N-1 Byte N

Function Code (66) Sub-Code (10) PN H PN L Index H Index L ASCII . . . ASCII NULL

Where,

Byte 1: Text Handing Function Code 66 (0x42)

Byte 2: Write List Parameter Text Sub-Code

Byte 3-4: 16-Bit Parameter Number (PN)

Byte 5-6: 16-Bit Index (1-Max) into List

Byte 7-N: 1 to 16 character Null terminated ASCII text string

Response PDU:

Byte 1

Byte 2 Byte 3 Byte 4 Byte 5 Byte 6

Function Code (66) Sub-Code (10) PN H PN L Index H Index L

Where,

Byte 4-N: Up to three character units text

Language independent

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Baldor Modbus Plus Bedienungsanleitung Seite 24