Programmed Communication Connections

5.5.5Parameter 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

Type = 1

Identifier for the connection type

 

 

ID = connection ID

 

 

Freely assignable connection reference;

No_of_subfields = n

must be specified in the FC FTP_**.

 

Subfield 1

Range of values for the connection ID:

 

Subfield 2

S S7-400: 1,2 through 64

 

S S7-300: 1,2 through 16

Subfield n

 

 

 

Usable Subfields

Table 5-6

 

Subfield

Parameter

 

 

 

 

 

ID

Type

Special Features / Notes

Use

 

 

(Please refer also to the general

( mandatory

 

 

description in Table 5-7 Page 159)

/ 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

m (for

 

 

S7-300 and does not need to be specified.

S7-400)

 

 

 

 

*) The general properties of the subfield types are described below in Section 5.6.

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SIMATIC NET NCM S7 for Industrial Ethernet

Release 6/2003

C79000–G8976–C129–07

Page 158
Image 158
Siemens NCM S7 appendix Parameter field for FTP connection, Subconnectname Sublocmode

NCM S7 specifications

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