Technical data

Table Of Contents
Open Communication via Industrial Ethernet
System Software for S7-300/400 System and Standard Functions - Volume 2/2
23-14
A5E00739858-01
The following table shows the parameter entries in the DB relevant for passive
establishment of a connection by communications partner B:
Parameter Data -
Type
Value in Example Description
id WORD W#16#0416 Reference to this connection
connection_type BYTE B#16#12 Connection type: ISO on TCP
active_est BOOL FALSE Passive connection establishment
local_device_id BYTE B#16#00 Communication AS-internal via CP
local_tsap_id_len BYTE B#16#07 Length of parameter used
local_tsap_id
rem_staddr_len BYTE B#16#04 Length of address for the remote
connection transmission point:
4: valid IP address in parameter
rem_staddr
rem_tsap_id_len BYTE B#16#07 Length of parameter used
rem_tsap_id
next_staddr_len BYTE B#16#01 Length of parameter used
next_staddr
local_tsap_id ARRAY
[1..16] of
BYTE
local_tsap_id[1] = B#16#E0
local_tsap_id[2] = B#16#04
local_tsap_id[3] = B#16#54
(ASCII equivalent of "T")
local_tsap_id[4] = B#16#43
(ASCII equivalent of "C")
local_tsap_id[5] = B#16#50
(ASCII equivalent of "P")
local_tsap_id[6] = B#16#2D
(ASCII equivalent of "-")
local_tsap_id[7] = B#16#31
(ASCII equivalent of "1")
local_tsap_id[8-16] = irrelevant
Local TSAP-ID: 0xE0045443502D31
rem_staddr ARRAY
[1..6] of
BYTE
"192.168.4.14"
rem_staddr[1] = B#16#C0
(192)
rem_staddr[2] = B#16#A8
(168)
rem_staddr[3] = B#16#04 (4)
rem_staddr[4] = B#16#0E (14)
rem_staddr[5-6] = irrelevant
IP address of the remote connection
transmission point