Multitech MTCBA-G-F2 Manuel d'utilisateur télécharger pdf (Page 28)

Chapter 4 – FTP Services

Multi-Tech Systems, Inc. AT Commands for Wireless Modems with IP Connectivity (S000333D) 28

#FTPGET Get Data from Server

Definition: This command, sent by the attached host, directs the TCP/IP stack to connect to the specified FTP

server and to retrieve the specified file from this server. Once the operation is completed, the TCP/IP

stack closes the FTP connection.

Once an IP link is established, the attached host can retrieve a file from an FTP server at any time

(except when the TCP/IP stack software is already in a process using TCP resources).

This command is similar to a GET operation (with an automatic connect/disconnect) issued by a

standard FTP client on a PC. The TCP/IP stack handles the global FTP process by itself.

Note: Each <ETX> character present in the payload data of the FTP flow will be coded by the TCP/IP

stack on the serial port as <DLE><ETX>. Each <DLE> character will be coded as <DLE><DLE>. The

attached host must then decode the FTP flow to remove these escape characters.

Values: Read Parameters:

FTPGETFILENAME

FTPGETPATH

FTPPORT

FTPSERV

FTPTYPE

FPTMODE

FTPPW

FTPUN

Syntax: AT#FTPGET

Command Possible Responses

AT#FTPGET

Note: Start

data reception

Ok_Info_DataBegin

The switch from command to data mode.

DATA

Note: Data transmitted from the FTP server to the TCP/IP stack is sent over the

serial port.

<ETX>

Note: Once the file transfer has finished, the TCP/IP stack sends an ETX character

over the serial port to notify the attached host of the end of file transfer:

switches from data to command mode.

Note: The FTP process was successfully completed.

AT#FTPGET #CME ERROR: 38027

Note: The address of the FTP server has not been resolved by the secondary DNS

server. The TCP/IP stack is not able to reach the primary or secondary DNS

servers or a wrong FTP server address has been filled in.

AT#FTPGET #CME ERROR: <value>

Note: The connection to the FTP server failed. See section ‘Response messages

and error codes.’ If this error occurs once the data transfer started, it is

preceded by an ETX character.

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