B&B Electronics MODSCAN32 - Manual - Manual (Page 27)

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MNetMon
MNetMon is a Win32 Application designed to unintrusively monitor an active modbus communications
link by tapping into the RS-232 Transmit signals via two separate PC comm ports. As MNetMon
recognizes data passed between the master and slave devices, it mirrows the data points to a local database,
and makes this data accessible to other network devices operating as modbus/TCP clients. MNetMon
operates as a modbus network server application, similar to MNetSvr but without actually polling the slave
devices. MNetMon may be used with any existing RS-232 modbus communications link to seamlessly
integrate the data with a PC network without impacting the integrity of the data exchanged between the
master and slave devices.
Modbus Master ActiveX Control
The WinTECH Software Modbuss OCX is a custom control which supports drag and drop functionality
into the Visual Basic devlopment workbench. The OCX is a modbus master control, which provides access
to modbus data from your VBA application. The OCX contains a basic series of properties defining the
connection, slave adress, point type, and point addresses to scan. Data from the defined slave is
automatically collected and presented to your application as an array of data points. Multiple controls may
be utilized within the same VBA application for accessing data of different types or data from different
slave devices. The modbus master control supports direct serial, modem, or network connections.
Modbus Slave ActiveX Control
The WinTECH Software Modbus Slave OCX is a custom control which supports drag and drop
functionality into the Visual Basic devlopment workbench. This very simple slave control allows your
Visual Basic application to define an array of data points to be made instantly available to any connected
modbus master device. Providing support for direct serial or network connections, this control is the
quickest way for a developer to interface his custom data to a modbus network.
Driver DLL’s
WinTECH Software can also supply source code to support custom development of modbus designs. Both
master and slave drivers are available for the Window’s platform in either 16 or 32-bit form factors. These
drivers are the same ones used by the above applications and are available at very reasonable prices. Each
driver is written in straight ‘C’ code and comes complete with an example Windows application, (source
form), written using the Microsoft MFC. The modbus slave dlls are compatible with Visual Basic, and
provide a very easy mechanism for desiging customized solutions.