CK721-A Installation and Operation Introduction
24-10349-8 Rev. B 1-15
This document contains confidential and proprietary information of Johnson Controls, Inc.ï€
© 2012 Johnson Controls, Inc.
When encryption is enabled, the following methods are supported for CK721-A
controller login connections:
 Secure Shell Telnet Client (SSH)
 Secure FTP Client (SFTP).
 Serial Port (RS-232C, Port A). Serial communications between the CK721-A
controller and the PC are not encrypted.
See Appendix G: Appendix G for details on the SSH and SFTP connection methods.
When encryption is disabled, the following methods are supported for CK721-A
controller login connections:
 Telnet Client
 FTP Client
 Serial Port (RS-232C, Port A)