Siemens S7-1200 System Manual page 544

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Table of Contents

Communication

10.2 PROFINET

CONF_DATA Data block

The following diagram shows how the configuration data to be transferred is stored in the

configuration DB.

The configuration data of CONF_DB consists of a field that contains a header

(IF_CONF_Header) and several subfields. IF_CONF_Header provides the following

● field_type_id (data type UInt): Zero

● field_id (data type UInt): Zero

● subfield_cnt (data type UInt): Number of subfields

Each subfield consists of a header (subfield_type_id, subfield_length, subfield_mode) and

the subfield-specific parameters. Each subfield must consist of an even number of bytes.

The subfield_mode supports a value of 1.

Only one field (IF_CONF_Header) is currently allowed. Its parameters field_type_id and

field_id must have the value zero. Other fields with different values for field_type_id and

field_id are subject to future extensions.

In the IF_CONF_Header field, only two subfields, "addr" (IP address) and "nos" (Name of

station) are currently allowed.

Table 10- 20 Subfields supported

subfield_type_id

Configuration DB

Configuration data

Subfield-specific parameters

IP parameters: IP address, subnet mask, router address

PROFINET IO device name (Name of station)

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG