Cimetrics.ru

Create PDF Print

How do I use the U+4 with the BAS-o-Matic to sniff a network?

Answer

The U+4 hardware is an intelligent USB to fieldbus interface. This allows you to use your PC's USB port to connect to an MSTP (RS485) network for sniffing the MSTP Network. This sniffing can be done with the help of the Cimetrics Sniffing software called as the BAS-o-Matic.

The following needs to be done for a connection;


- Install the driver for the U+4 on your PC

- Plug the device into your PC (In the USB port).Once the U+4 is plugged into the PC in the USB slot, this will add an extra Local Area Connection in your Network Places that corresponds to the U+4. In order to configure settings, you would need to select this Local Area Connection.

Once you are in the Local Area Connection, RT Click | Properties |Configure | Advanced, you will see all the options given below. Please configure according to your use.


Card Speed:

Select needed Baud rate(in the range from 1200 to 115200 bps) from the list

Filter:

Use the filter option to select what kind of packets you want to capture or receive:

-"All" - to receive all packets (including all types of MS/TP frames and error notifications)

-"All BACnet data" - to receive all MS/TP frames transporting BACnet NPDU.

-"Directed BACnet data" - to receive MS/TP frames with BACnet NPDU, destined only to our Node Address and Broadcasts.

-"Directed BACnet NPDU only" - to receive only directed or Broadcast NPDU. (accepted by any BACstac version). MS/TP information is absent.


Node Address:

Set address of this node in the range [0-254]. IMPORTANT Note: Master node must be in the range [0-Max_master]

Node Type:

Select "Monitor Node". The "Monitor" mode can be used for Bas-o-matic only. This mode would be used if you are using the fieldbus interface purely for sniffing purposes only.


Max_info_frames[1-10]:

Leave at default settings.

Max_master[1-127]:

Leave this at the default settings.


Once the above settings are done, you should be able to start the BAS-o-Matic and start capturing communications from a BACnet/MSTP network.

Category

U+4 device (Fieldbus interface) general questions