Siemens SIMATIC S7-1200 System Manual page 511

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Parameter and type

S7-1200 Programmable controller

System Manual, V4.2, 09/2016, A5E02486680-AK

Data log name: You provide the name. This variant only

supports a String data type and can only be located in

local, DB, or M memory. (Default value: ' ')

The string reference is also used as the name of the data

log file. The name characters must follow the Windows

file system naming restrictions. Characters \ / : * ? " < > |

and the space character are not allowed.

Data log numeric identifier: You store this generated

value for use with other Data log instructions. The ID

parameter is only used as an output with the DataLog-

Create instruction. (Default value: 0)

Symbolic name access for this parameter is not allowed.

Pointer to data log column header names for the top row

of the data matrix encoded in the CSV file. (Default val-

HEADER data must be located in DB or M memory.

The characters must follow standard CSV format rules

with commas separating each column name. The data

type may be a string, byte array, or character array.

Character/byte arrays allow increased size, where

strings are limited to a maximum of 255 bytes.

The HEADER parameter is optional. If the HEADER is

not parameterized, then no header row is created in the

Data log file.

Pointer to the record data structure, user defined type

(UDT), or array. Record data must be located in DB or M

The DATA parameter specifies the individual data ele-

ments (columns) of a data log record and their data type.

Structure data types are limited to a single nesting level.

The number of data elements declared should corre-

spond to the number of columns specified in the header

parameter. The maximum number of data elements you

can assign is 253 (with a timestamp) or 255 (without a

timestamp). This restriction keeps your record inside the

256 column limit of an Excel sheet.

The DONE bit is TRUE for one scan, after the last re-

quest was completed with no error. (Default value: False)

0 - No operation in progress

1 - Operation on progress

The ERROR bit is TRUE for one scan, after the last

request was terminated with an error. The error code

value at the STATUS parameter is valid only during the

single scan where ERROR = TRUE.

Execution condition code (Default value: 0)

Extended instructions

9.9 Recipes and Data logs

Siemens SIMATIC S7-1200 System Manual page 511

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