6 Programmed Communication Connections
A-176
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
6.5.5 Parameter field for FTP connection
Meaning
To handle an FTP job sequence between the S7 station as FTP client and an FTP
server, the IT-CP must set up a connection to the S7-CPU. This connection is
known in this context as an FTP connection.
FTP connections are TCP connections, with the parameter SUB_LOC_MODE set
to the “FTP” mode.
You will find a detailed description of how to use the FTP function with IT-CPs in
/5/.
Structure
Subfield 1
Subfield n
Subfield 2
ID = connection ID
Type = 1
No_of_subfields = n
Freely assignable connection reference;
must be specified in the FC FTP_**.
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 6-9
Subfield
Parameter
ID Type
*)
Special Features / Notes
(Please refer also to the general
description in Table 6-10 Page A-177)
Use
( mandatory
/ optional)
18 SUB_CONNECT_NAME - o
19 SUB_LOC_MODE here: 0x01 = FTP protocol m
21 SUB_KBUS_ADR This value is always set to 0 for CPs for the
S7-300 and does not need to be specified.
m (for
S7-400)
*)
The general properties of the subfield types are described below in Section 6.6.
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