6 Programmed Communication Connections
A-172
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
6.5.2 Parameter Field for a UDP Connection
Structure
Subfield 1
Subfield n
Subfield 2
ID = connection ID
Type = 2
No_of_subfields = n
Freely assignable connection reference;
must be specified in AG_SEND / AG_RECV.
Range of values for the connection ID:
S7-400: 1,2 through 64
S7-300: 1,2 through 16
Identifier for the connection type
Usable Subfields
Table 6-6
Subfield
Parameter
ID Type
*)
Special Features / Notes
(Please refer also to the general
description in Table 6-10 Page A-177)
Use
(
mandatory /
optional)
1 SUB_IP_V4 IP address of the partner m
9 SUB_LOC_PORT - m
10 SUB_REM_PORT - m
18 SUB_CONNECT_NAME - o
19 SUB_LOC_MODE - o
21 SUB_KBUS_ADR This value is always set to 2 for CPs for
the S7-300 and does not need to be
specified.
m (for
S7-400)
23 SUB_ADDR_IN_DATABLOCK If the “Free UDP connection” is selected
for this parameter, the parameters
SUB_IP_V4, SUB_LOC_PORT,
SUB_REM_PORT are omitted.
o
*) The general properties of the subfield types are described below in Section 6.6.
Note
Please read the description of the configurable connection properties for the for
the UDP connection in Section 5.7!
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