Technical data

Table Of Contents
Open Communication via Industrial Ethernet
System Software for S7-300/400 System and Standard Functions - Volume 2/2
23-6
A5E00739858-01
Byte Parameter Data
Type
Start Value Description
9 rem_staddr_len BYTE B#16#00 Length of address for the remote connection
transmission point:
0: unspecified, i.e. parameter rem_staddr is
irrelevant.
4: valid IP address in the parameter
rem_staddr
10 rem_tsap_id_len BYTE B#16#00 Length of parameter local_tsap_id used; possible
values:
0 or 2, if connection type = B#16#01 or
B#16#11
For the passive side, only the value B#16#00
is permitted.
2 to 16, if connection type = B#16#12
11 next_staddr_len BYTE B#16#00 Length of parameter next_staddr used
12 to
27
local_tsap_id ARRAY
[1..16] of
BYTE
B#16#00 ... With connection_type =
B#16#11: local port no. (possible values: 2000
to 5000),
local_tsap_id[1] = high byte of port no. in
hexadecimal representation,
local_tsap_id[2] = low byte of port no. in
hexadecimal representation,
local_tsap_id[3-16] = irrelevant
B#16#12: local TSAP ID:
local_tsap_id[1] = B#16#E0 (connection type
T-connection),
local_tsap_id[2] = Rack and slot in own CPU
(bits 0 to 4 slot, bits 5 to 7: rack number),
local_tsap_id[3-16] = TSAP extension
B#16#01: local port no. (possible values: 2000
to 5000),
local_tsap_id[1] = low byte of port no. (in
hexadecimal representation,
local_tsap_id[2] = high byte of port no. (in
hexadecimal representation,
local_tsap_id[3-16] = irrelevant
Note: Make sure that each value of
local_tsap_id that you use in your CPU is
unique.
28 to
33
rem_subnet_id ARRAY
[1..6] of
BYTE
B#16#00 ... This parameter is currently not used. You must
assign 0 to it.