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Micro Automation Set 14

4.3

Receiving and archiving the data records in S7-300, S7-400 and

WinAC

Table 4-3

No.

The central processing units of S7-300,

S7-400 and WinAC station receive data

from S7-200 "Basis" in a receive buffer.

The archive data block has room for 90

data records consisting of 20 data fields.

One data field consists of 8 bytes user

data. Using self-defined data types

(UDTs), this structure is emulated for the

archive data block. The eight bytes user

data can be handled as a data type and

copied as often as desired.

Due to a relative addressing of the data

records in the archive data block, a new

data record is added to the already

existing data records during each new

write procedure. If the archive data block

is full, the oldest archive data are

overwritten.

The job for archiving the 20 data fields at

the receive buffer in the archive data

block is issued if all 20 data fields have

been received and if consistency is

ensured.

V2.0

Entry ID 21062588

Function

05/18/05

Principle of Operation

Comment

Input buffer

DB1

78 98

Data field1