CK721-A User Interface CK721-A Installation and Operation
4-2 24-10349-8 Rev. B
This document contains confidential and proprietary information of Johnson Controls, Inc.
© 2012 Johnson Controls, Inc.
 Do not attempt modifications to the controller database during controller database
download operations.
 The CK721-A controllers have a C and a factory default host IP address. They allow
the configuration of the CK721-A controller operational parameters via an Ethernet
cross-over cable connected to the Ethernet port.
The default values for the controller IP addresses and network
mask are set at the
factory or after a Clear Database/Write To Flash commands. The default values are:
Table 4-1: Factory Default IP Addresses and Network Mask
IP Address/Network Mask Value
Controller IP Address 192.168.2.2
Controller Network Mask 255.255.255.0
Host IP Address 192.168.2.1
Notes on Encryption
When encryption is enabled, the following methods are supported for CK721-A
controller login connections:
 Secure Telnet Client (SSH). See Appendix G for setup guide.
 Secure FTP Client (SFTP). See Appendix G for setup guide.
 Serial Port (RS-232C, Port A). Serial communications between the CK721-A
controller and the PC are not encrypted.
See Appendix G: Configuring SSH and SFTP Clients for details on the SSH and
SFTP connection methods.
When encryption is disabled, the following methods are supported fo
r CK721-A
controller login connections:
 Telnet Client
 FTP Client
 Serial Port (RS-232C, Port A)
PRINCIPLE OF OPERATION
During normal operation, CK721-A panels are configured using the P2000 software. When a
controller is defined at the P2000 server, the information downloaded to the panel
automatically overwrites any information defined through the individual controller’s user
interface. The exceptions are the individual controller’s IP and netmask addresses, the server
IP and netmask, and the network polling delay. For this reason, the user interface should
never be used to configure a panel once normal operation has begun. After the start of
normal operation, only the P2000 software should be used to configure CK721-As.
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