Crestron cnrackx-dp User Manual

Page of 44
CNX Dual Processor Modular Control System  
Crestron CNRACKX-DP
 
Obtaining Communications 
NOTE:  In order for the CNRACKX-DP to be fail-safe operational, communication 
must be obtained with both CNXCPUs. The following procedure must be performed 
on the currently active processor, the processors must be electronically switched, and 
the procedure repeated for the other processor. To switch processors from the 
Viewport, select Diagnostics | Switch Processors (CNRACKX-DP). To switch 
processors from the front panel default LCD display, press the DP button then CPU 
and the CNRACKX-DP will reset and make the other CNXCPU active. 
NOTE:  If optional CNXENET+ Ethernet Expansion Cards are installed into the 
CNXCPUs, communications can be obtained with the CNRACKX-DP over TCP/IP. 
The CNXENET+ Operations & Installation Guide explains how to load the required 
IP Table that contains the addresses of the Ethernet devices and set up the control 
system for Ethernet communications. Refer to the CNXENET+ Operations & 
Installation Guide (latest revision of Doc. 8153) for further information. 
Before attempting to upload the program files into the CNRACKX-DP, it is 
necessary to first establish communication between the CNRACKX-DP and a PC. 
There are two ways of communicating with the CNRACKX-DP, either via the 
COMPUTER port (RS-232 serial communications) or via Ethernet if optional 
CNXENET+ Ethernet Expansion Cards are installed into the CNXCPUs. Prior to 
completing the following steps, be sure the communication cable is properly 
connected as described in 
 on page 14.  
1.  Make sure that no programs accessing the COM port of the PC are 
running.  
2. Select 
Start | Programs | Crestron | SIMPL Windows to start SIMPL 
Windows.  
3.  SIMPL Windows responds with an opening splash screen and may 
display the “What do you want to do?” dialog box. If so, close the 
dialog box.  
4.  As illustrated below, select Tools | Viewport to open the Crestron 
Viewport dialog box.  
Accessing the Viewport 
 
20  
  CNX Dual Processor Modular Control System: CNRACKX-DP 
Operations Guide - DOC. 8151