Owner manual
Installing and Running the MPR Buffer Management Utility 
To install the MPR-50 Buffer Management utility, unzip the files from the supplied 
ZIP file into the LONWORKS bin directory (usually, C:\LonWorks\bin). This step 
creates a new directory with four files. 
To run the MPR-50 Buffer Management utility, double click the icon for the “MPR-
50Tool.exe” file. 
This program requires the following Windows dynamic link library (DLL) files to be 
present on the Windows system: 
•  LDV32.DLL – for the LDV32 interface 
•  MFC42.DLL – for the Microsoft Foundation Classes 
This program supports the following Network Interfaces: 
•  Supported: USB U10 and RNI (e.g., i.LON
®
 10 and i.LON 100). 
•  Not Supported: IP-852 Network Interfaces. 
Using the MPR Program 
To check the MPR-50 buffer sizes: 
1.  Connect the network interface to any of the MPR routers (e.g., Router 2). 
a.  Router 1 is for a TP/XF-1250 channel and Routers 2 – 5 are for TP/FT-10 
channels. 
2.  Select the Network Interface and click Open. 
a.  Click Close to close the Network Interface. 
Checking the Current Buffer Sizes 
To check the MPR-50 buffer sizes: 
1.  Make sure the Buffer Recover Mode button is off (i.e., grey background). 
2.  Click the Routers Found Button to clear the list of registered routers. 
3.  Press each MPR router service pin. The buffers sizes will be displayed in the Log 
Box. 
Using Buffer Configure 
To configure the MPR-50 buffers, you first need to configure the MPR-50 for repeater 
mode. If you are unable to configure the MPR-50, or it is not working, then the 
router buffer settings might be corrupted. To fix them, use the Buffer Recover Mode 
on the routers before changing the buffer sizes to the desired values; see 
Using 
Buffer Recover Mode
 on page 39 for more information. 
Note: While the Buffer Recover Mode is enabled (the button is orange), when you 
press a Service Pin on the MPR-50, the utility tries to recover the buffers for that 
router and sets the buffer size to 114 bytes. 
To change the MPR-50 buffer sizes: 
1.  Decommission all the routers in the MPR-50 if they have been commissioned 
before. If the MPR-50 has not been commissioned or if all the MPR-50’s status 
MPR-50 Multi-Port Router User's Guide   37 










