Detailed Product Listing
MODEL MTX002
USB TO MS/TP PORT ADAPTER

MTX002

USB to MS/TP Adapter

• Intelligent adapter off-loads token passing from PC
• Operates as MS/TP Client in device configuration mode
• RS485 pass-through mode for Modbus RTU diagnostics
• Firmware upload mode for device updates
• 9600 through 76800 baud

Note: User Guide and Software for the MTX002 are included in configuration tool downloads for respective products that the tool will be used with.

MTX002
USB to MS/TP Adapter

Order code: MTX002
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Control Solutions’ MTX002 is a USB to MS/TP port adapter. It allows connecting to MS/TP devices via the USB port on your PC. The MTX002 is intended primarily as an aid in configuring specific Control Solutions devices, but does include general purpose BACnet object browsing capability usable with any MS/TP device.

The MTX002 operates as an MS/TP client device on the network, reading and writing properties in the device being configured as directed by the configuration tool applicable to the product being configured. As a client, the MTX002 can also read/write any standard BACnet properties in any MS/TP device using the BACnet diagnostic page of the software tool available for free download on the support pages.

The MTX002 defaults to being an MS/TP client, but can be placed in pass-through mode. This mode has additional uses for the MTX002.

The MTX002, in pass-through mode, can be used for Modbus RTU diagnostics. Programs such as ModScan or Modbus Tester can read/write Modbus registers in a Modbus slave I/O device, or in BACnet gateways operating as a Modbus slave.

The MTX002, in pass-through mode, when used in conjunction with mstpcap.exe, can be used for packet capture and protocol analysis on the MS/TP network. The mstpcap.exe program is used to capture packets, and Wireshark is used for packet analysis.

The MTX002 is powered from the USB port, and includes a hardened RS485 serial port with screw terminal block connector. USB cable is included.

MS/TP Packet Capture and Protocol Analysis

You can use Wireshark to analyze MS/TP packets captured with the mstpcap packet capture utility. Click here for pdf describing the process.

Click here for an example of a software configuration tool for BACnet devices.

Products Supported by
Configuration Software using the
MTX002 USB to MS/TP Adapter
Babel Buster 2
Model BB2-3010
BACnet Modbus Gateway
ValuPoint IV
Model VP4-2330
MS/TP Controller

How do you map a Modbus register to a BACnet object?

It is as simple as entering a register number, selecting the register type, and telling the gateway what the Modbus device's network address is.

 Using the free configuration tool provided by Control Solutions (download from this web site), you simply need to select register type and format from drop-down lists, fill in register number, choose a slave ID and poll rate, check the Enable Map box, and click the Write button to send this to the Babel Buster.

It is not a requirement that you use the Control Solutions configuration tool to configure the Babel Buster gateway. Any BACnet client capable of writing both standard and manufacturer specific object properties (using only standard BACnet data types) can configure the gateway.