Siemens ET 757 E Series Instruções de Operação descarregar pdf (Página 107)

Commissioning and optimization (software)

7.4 Commissioning of communication between the S7 CPU and the frequency converter

ET 200pro FC

Operating Instructions, 11/2007, A5E01100763B AA

107

Table 7-13 Description of the fields for parameter requests

Field Data type Values Remark

Request positive,

status ok

Unsigned 8 0x01

0x02

0x81

0x82

Read request (+)

Write request (+)

Read request (–)

Write request (–)

Request negative,

error state

Request ID

Mirrors the request ID and indicates whether the execution of the request has

been positive or negative. Negative means: part of the - or the entire request

cannot be executed. The error values are transferred in place of the values for

every sub-response.

Drive object ID See the table above

Qty Parameters See the table above

Format See the table above

Qty Values See the table above

Values See the table above

Unsigned 16 0x0000 … 0x00FF Meaning of the error values: See

the next table

Error values

The error values in the event of a negative response. A zero byte is appended if

the values result in an odd number of bytes. This ensures integrity of the word

structure in the telegram.

Note

The DRIVE-ES SIMATIC block package provides function blocks within the standard block

libraries for writing/reading parameters, including a few examples.

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Siemens ET 757 E Series Instruções de Operação Página 107