Modbus Poll

A useful Modbus master simulator designed primarily to help developers of Modbus slave devices
Modbus Poll is a useful Modbus master simulator designed primarily to help developers of Modbus slave devices or others which want to test and simulate the Modbus protocol.

With the multiple document interface you can monitor several Modbus slaves and/or data areas at the same time. For each window you simply specify the Modbus slave ID, function, address, size and poll rate. You can read and write registers and coils from any window. If you want to change a single register, simply double click the value. Or you can change multiple registers/coils. Multiple data formats such as float, double and long with word order swapping are available.

If you are a slave developer you can compose and send your own test strings in the "test center" and check the result from the slave in hex numbers.

OLE Automation for interfacing with Visual Basic, Excel etc. To interpret and show the Modbus data according to your specific requirements. E.g. edit data in Excel and then transmit the data to your slave device! Try the Excel example.xls installed with the program.

SUPPORTED MODBUS FUNCTIONS:
Read coil status
Read input status
Read holding register
Read input registers
Force single coil
Preset single register
Force multiple coils
Preset multiple registers
Read/Write registers

Main features of Modbus Poll:

OLE Automation means easy interface to Visual Basic, use it almost like an ActiveX component. See VBExample.vbp

RTU Mode

ASCII Mode

Modbus TCP/IP

Modbus UDP/IP

Modbus RTU Over TCP/IP

Read/write of up to 125 Registers

Read/write of up to 2000 Inputs/Coils

Test Center (Compose your own test strings)

Print and print preview

Monitoring of serial data traffic

Data logging to text file ready for import in Microsoft Excel

Context sensitive help

10 Display formats such as float, double etc.

Adjustable Address Base (0 or 1).

Font and color selection.

Broadcast (slave ID 0).

Easy control of RS-485 converters with RTS toggle.


Limitations of Modbus Poll:

30 days trial

What's New in This Release:

Error counter dialog box did not work correct after "Transaction ID error" was added in version 4.1.2

Free Download ( Evaluation | 638 KB )

Buy Now ( Full version | $69 )