Installation guide
Crestron C2ENET-1/-2  2-Series Ethernet Interface Expansion Cards 
transmitted and received via <TX$> (transmit) and <RX$> (receive) for as long as 
<Connect-F> remains high. 
The <status> output is used for diagnostics and reports the connection status. The 
valid values are shown in the following table: 
Analog Value  Connection Status 
0 Not connected 
1  Waiting for connection 
2 Connected 
3  Connection failed 
4  Connection broken remotely 
5  Connection broken locally 
6 Performing DNS lookup 
7  DNS lookup failed 
The TCP/IP Client symbol differs from the TCP/IP Server symbol (refer to graphic 
below) in that the Server symbol can only listen for a connection from a device, 
whereas the Client symbol can initiate the connection. 
Detail View of the TCP/IP Server Symbol in SIMPL Windows’ Programming Manager 
The TCP/IP Server symbol enables TCP/IP communication between any device with 
a TCP/IP port and the control system. It differs from the TCP/IP Client symbol in 
that the latter symbol can initiate a connection with a device, whereas the TCP/IP 
Server symbol can only listen for a connection. 
The symbol must be assigned the IP address of the device, while the port address of 
the device must be entered in the <Port> parameter of the symbol. Both the IP 
address and port should be provided by the manufacturer's documentation. 
When the device establishes communication with the symbol, the <Connect-F> 
output goes high. Serial data can then be transferred via <TX$> (transmit) and 
<RX$> (receive) for as long as <Connect-F> remains high. 
The <status> output is used for diagnostics and reports the connection status. The 
valid values are the same as those shown in the previous table. 
The optional <enable> input has a default value of 1. If <enable> is defined and 
goes low, no connection can be established (and <status> will equal 0). 
Operations & Installation Guide – DOC. 5962B  2-Series Ethernet Interface Expansion Cards: C2ENET-1 & C2ENET-2 • 17 










