RC7620 Can not use FTP


I have a question about RC7620.

I want to use AT command to connect FTP

Command is below:

  1. at+kftpcfg=1,“ftp.speed.hinet.net”,“ftp”,“ftp”,21,1
  2. at+kftpcnx=1

but I got error code


I don’t know why. Please help me thanks.

did you test in UART without USB connection?

Hi @jyijyi ,

Thanks for your reply.

We can not connect to internet by UART.
We check value AT+CSQ but the result is 99.

have you checked AT!GSTATUS?

Then are you using Windows or linux for your testing with USB?

Hi @jyijyi ,

I checked AT!GSTATUS?

The result is below:


I tested it by using windows.

you can try AT+CFUN=1

螢幕擷取畫面 2022-03-10 104908

I’m Larry’s colleague.
Yes we try at+cfun=1,but still can not connect to internet by UART.

what is AT!GSTATUS? after AT+CFUN=1

Hi @jyijyi

Now situation.

I don’t see problem with UART and without USB connection:





+KCNX_IND: 1,4,1

+KCNX_IND: 1,1,0

+KFTP_IND: 1,1

Hi @jyijyi

I try the same command but respond +CME ERROR: 3.

seems you need to type manually for character “”

Hi @jyijyi

I try again.Still have some problem.

did you enter


Hi @jyijyi ,

We use AT+KCNXCFG=1,“GPRS”,“internet”,"","" it looks fine.

But we use AT+KFTPCNX=1 then got the result is 911.

So what should I do for download or upload test file ?

And other question How can I query ftp server ?

no problem is found here
is it happening on other network?

Hi @jyijyi

We only have this network. We can use this network to connect internaet on Windows.

you can see here:

Hi @jyijyi

Confirmed baud rate is 115200 but still error.