is there any way to transfer file in Ascii mode using ftp or sftp

We have a server and we need to transfer file in Ascii mode. While transferring : when we use "ftp" command getting below error Error: 530 Log on attempt by user rejected (530 Secure connection required) or Error: 530 Not logged in. Username/password incorrect, user disabled, or user logged in too many times Password is correct as i am able to login using sftp but in sftp not sure how to transfer in ascii mode. Any suggestion pls Pls suggest if there is any reference link to refer