Lenze E84DxxxxxxxxxR - Manual (Page 45)

EDS84DPNET EN 4.0 - 11/2010
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Communication manual 8400 protec PROFINET
Parameter data transfer
Writing parameters to the controller
8.3 Writing parameters to the controller
Request header
Parameter attribute
Index and subindex
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Note!
• When a multi-parameter write request is processed, the parameter attribute,
index, subindex, and then the parameter format and parameter value are
repeated "n" times, "n" being the number of parameters requested.
• A parameter request must not exceed the max. data length of 240 bytes.
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 0x02: Write parameter
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)