Siemens SIMATIC NET CP 243-1 IT Technical Manual page 71

03/03
Byte Offset
in Variable
Memory
16#00000000 when BOOTP is being
used.
23-26 IP address of the gateway
16#00000000 means: Don't use
gateway.
This field should be set to
16#00000000 when BOOTP is being
used.
27-28 Keep Alive time parameter in sec-
onds
S7 connection 0 section (If not all bytes of this section are used, fill them with16#00.)
29 Flag byte
Bit [0] Server/client
Bit [1] Keep Alive
Bit [2-6] Not used
Bit [7] Section valid
30-33 With server functionality:
IP address area of client for access
protection
16#00000000: No protection
16#XXXXXX00 Client of same class-
C segment is permitted.
16#XXXXXXXX Only exactly the
same address is permitted.
With client functionality:
IP address of the S7 server
34-35 Local TSAP
S7 connection 1 section (If not all bytes of this section are used, fill them with16#00.)
38 Flag byte
See S7 connection 0 section.
39-42 IP address of the partner
See S7 connection 0 section.
43-44 Local TSAP
45-46 Remote TSAP
CP 243-1 IT
J31069-D0429-U001-A0-7618
Description
0: Server
1: Client
0: No Keep Alive support
1: Keep Alive support
0: Section not used
1: Section used
Data Format
4 bytes, hex 192.12.45.24:
16#C00C2D18
2 bytes, hex 16#001E:
30 seconds
1 byte, hex 16#82:
Server. Keep Alive
support. S7 connection
0 is being used and
contains valid data.
4 bytes, hex 192.12.45.22:
16#C00C2D16.
2 bytes, hex 16#1000
1 byte, hex See S7 connection 0
section.
4 bytes, hex See S7 connection 0
section.
2 bytes, hex 16#1100
2 bytes, hex See S7 connection 0
section.
Configuration
Example
71