Lenze E84DxxxxxxxxxR Manual de usuario descargar pdf (Pagina 40)

Communication manual 8400 protec PROFINET

Parameter data transfer

Reading parameters from the controller

40 L EDS84DPNET EN 4.0 - 11/2010

8.2 Reading parameters from the controller

Request header

Parameter attribute

Index and subindex

 Note!

• When a read request is processed, no parameter value is written to the IO

device.

• In the case of a multi-parameter read request, the parameter attribute, index,

and subindex are repeated "n" times, "n" being the number of parameters

requested.

Byte 1 Byte 2 Byte 3 Byte 4

Request reference Job identification Axis Number of indices

Field Data type Values

Request reference U8 This value is specified by the IO controller.

Job identification U8 0x01: Request parameter for reading

Axis U8 0x00 or 0x01

Number of indices U8 0x"n" (n = number of parameters requested)

Byte 5 Byte 6

Attribute Number of subindices

Field Data type Values

Attribute U8 0x10: Value

Number of subindices U8 0x00 or 0x01

Byte 7 Byte 8 Byte 9 Byte 10

Index Subindex

High byte Low byte High byte Low byte

Field Data type Values

Index U16 0x0001 ... 0xFFFF (1 ... 65535)

Subindex U16 0x0001 ... 0xFFFF (1 ... 65535)

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 83 84

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