User manual
Reference  MVI56-HART ♦ ControlLogix Platform 
User Manual  HART Multi-drop Master Communication Module 
Page 98 of 171  ProSoft Technology, Inc. 
  October 13, 2011 
5.3  Disabling the RSLinx Driver for the Com Port on the PC 
The communication port driver in RSLinx can occasionally prevent other applications 
from using the PC’s COM port. If you are not able to connect to the module’s 
configuration/debug port using ProSoft Configuration Builder (PCB), HyperTerminal or 
another terminal emulator, follow these steps to disable the RSLinx driver. 
1  Open RSLinx and go to COMMUNICATIONS > RSWHO. 
2  Make sure that you are not actively browsing using the driver that you wish to stop. 
The following shows an actively browsed network. 
3  Notice how the DF1 driver is opened, and the driver is looking for a processor on 
node 1. If the network is being browsed, then you will not be able to stop this driver. 
To stop the driver your RSWho screen should look like this: 
Branches are displayed or hidden by clicking on the   or the   icons. 
4  When you have verified that the driver is not being browsed, go to COMMUNICATIONS 
> CONFIGURE DRIVERS. 
You may see something like this: 










