Table 7 Structure Of The Cdb - Siemens SIMATIC NET CP 243-1 IT Technical Manual

03/03
Byte Offset
in Variable
Memory
88-89 Local TSAP
90-91 Remote TSAP
S7 connection 7 section (If not all bytes of this section are used, fill them with16#00.)
92 Flag byte
See S7 connection 0 section.
93-96 IP address of the partner
See S7 connection 0 section.
97-98 Local TSAP
99-100 Remote TSAP
STEP 7 Micro/Win server section
101 Flag byte
Bit [0] Server
Bit [1] Keep Alive
Bit [2-6] Not used
Bit [7] Section valid
102-105 Internal system use
CRC section
106-107 CRC covering all CDB bytes without
the CRC section itself
Table 7
CP 243-1 IT
J31069-D0429-U001-A0-7618
Description
0: Server
1: Not supported
0: No Keep Alive support
1: Keep Alive support
0: Not supported
1: Section used
Structure of the CDB
Data Format
2 bytes, hex 16#1600
2 bytes, hex See S7 connection 0
section.
1 byte, hex See S7 connection 0
section.
4 bytes, hex See S7 connection 0
section.
2 bytes, hex 16#1700
2 bytes, hex See S7 connection 0
section.
1 byte, hex 16#82:
Server. Keep Alive
support. STEP 7 Mi-
cro/WIN server section
is being used and con-
tains valid data.
4 bytes, hex
2 bytes, hex
Configuration
Example
73