Crestron cnmsx User Manual

Crestron CNMSX 

Integrated Control System

 

Passthrough mode allows data to pass from the COMPUTER port to the selected 
COM port on a Cresnet or Ethernet device (such as ST-COM or CEN-COM). While 
passthrough mode is running, the program currently in memory is suspended and will 
not execute. When passthrough mode is exited, the program resumes operation. The 
TX and RX LEDs for the given port illuminate when in passthrough mode.  

Entering passthrough mode for one of the internal COM ports reinitializes it, which 
clears the data for that port. The COM analyzer also functions while the unit is in 
passthrough mode. 

Release of the CNX Operating System (version 5.01.05 or later) supports a 
communications (COM) analyzer function to examine serial data transmitted to and 
received from any of the six internal serial ports only. Complete the following steps 
to access the COM Analyzer.  

1.  From the front panel Main Menu (default front panel page), press the 

COM menu function button.  

2.  From the next menu, press the menu function button associated with one 

of the six COM ports. The six ports are A through F, as labeled on the 
rear panel of the CNMSX-PRO.  

3.  The Format Selection Menu appears, as shown below. BIN, ASCII, and 

HEX control how data is to be displayed on the T/R screen. Depressing 
either of the three data formats jumps to the T/R screen.  

 

Since there is no room on the T/R screen for button text, RESET and RFSH (refresh) 
are provided on the Format Selection Menu to show their location on the T/R screen.  

RESET resets the display buffers for both transmit and receive. An empty buffer is 
indicated by the phrase “Display Buffer Clear” in the T/R screen. Pressing BIN, 
ASCII, or HEX displays the screen shown below.  

 

The top line of the T/R screen displays data that is transmitted out the selected ports 
in the selected format. The bottom line displays the data that is received in the 
selected format. If more data is present in the display buffer, only the most recent data 
is displayed (older data scrolls off the screen).  

•  35