Structure Of The Configuration Data Block (Cdb) - Siemens CP 243-1 Operating Instructions Manual

Table 3- 1
3.4.2

Structure of the configuration data block (CDB)

The CDB is created by the Internet wizard in STEP 7 Micro/WIN 32. The structure of the
CDB is shown below in the following table.
Table 3- 2 Structure of the CDB
Byte offset in Description
variable memory
Header
0-4 Module name
5-6 Length of the CDB
7-8 Length of the NPB
General information
9 Internal system use
10 Internal system use
11-12 Reserved for STEP 7 Micro/WIN 32
CP 243-1
Operating Instructions, 03/2012, C79000-G8976-C244-02
Special memory area
Position in the S7-200 system
CPU
0
1
2
3
4
5
6
3.4 Other options when configuring a CP 243-1
Occupied special memory area
Data format
5 bytes ASCII
2 bytes, hex
2 bytes, hex
1 byte, hex
1 byte, hex
2 bytes, hex
Configuration
-
200..249
250..299
300..349
350..399
400..449
450..499
500..549
Example
16#4350323433
"CP243"
16#006C
(108 decimal)
16#0014
(20 decimal)
67