Siemens SIMATIC NET CP 243-1 Technical Manual page 43

09/02
Byte offset in
variables mem-
ory
set to 16#00000000 if BOOTP is
used.
23-26 IP address of Gateway.
16#00000000 means: do not use
Gateway.
This field should be set to
16#00000000 if BOOTP is used.
27-28 Time parameter for Keep Alive in
seconds
S7 connection 0 section (If not all bytes are used in this section, they should be filled in with
16#00)
29 Flag byte
Bit [0] Server/Client
Bit [1] Keep Alive
Bit [2-6] Not in use
Bit [7] Section valid
30-33 For server functionality:
IP address space of client for access
protection
16#00000000: No protection
16#XXXXXX00 Client of the same
Class-C segment is permissible
16#XXXXXXXX only exactly the
same address is allowable
For client functionality:
IP address of S7 server
34-35 Local TSAP
S7 connection 1 section (If not all bytes are used in this section, they should be filled in with
16#00)
38 Flag byte
See S7 connection 0 section.
39-42 IP address of partner
See S7 connection 0 section.
43-44 Local TSAP
CP 243-1
J31069-D0428-U001-A1-7618
Description
0: Server
1: Client
0: No Keep Alive support
1: Keep Alive support
0: Section not in use
1: Section in use
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, the S7 con-
nection, 0, is in use
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
Configuration
Example
39