Specifications

Software Crestron e-Control
®
The Active CNX control initiates a connection to the control system—and its
associated ActiveCNX Interface symbol—through a method, or internal command,
called Connect( ). This method has two parameters: 1) The IP address or fully-
qualified domain name of the control system; and 2) The IP ID of the ActiveCNX
Interface symbol, as set in SIMPL Windows.
On the control system (SIMPL Windows) side, the ActiveCNX Interface symbol is
assigned the IP address of the machine where the gateway resides, and an IP ID that
matches what is passed to the Connect( ) method.
The control system functions as a server; it cannot initiate a connection to the
ActiveCNX control. It can only listen for a connection. The ActiveCNX control acts
as a client; it initiates the connection.
In the configuration shown below, the ActiveCNX control resides on the same PC as
the CNX-EGWY. Here the ActiveCNX control uses the Connect( ) command to start
the connection, while the gateway receives the TCP/IP packet and converts it to a CIP
datagram. The data is forwarded to the control system.
PC/CNX Gateway (192.168.1.100)
ActiveCNX Control -- Connect (IP Address 192.168.1.200, IP ID 05)
192.168.1.XXX Ethernet Network
TCP/IP
Control System (192.168.1.200)
ActiveCNX Interface (IP Address: 192.168.1.100, IP ID: 05)
CIP
CIP
Controlled Devices
Once a connection is established, data can pass back and forth between the PC
application and the control system, just as with any other interface. As commands are
sent to the control system, the control system forwards the commands to controlled
devices. Feedback from the devices is sent to the control system and goes back in real
time to the PC application.
42 • Crestron e-Control® Reference Guide – DOC. 6052