Frequently Asked Questions

General questions:

We want to order but are not able to use a credit card. How can we order?

During the registration process you will be given an option to place a fax, mail or purchase order as an alternative to the standard online credit card order.

Do we receive a receipt when we order using a credit card?

Yes

Our organization is tax exempt (certificate attached). How can I go about having it credited?

Please find information here.

We need a W-9 Form.

We use fastspring to handle our online order. Please find their W9 form here.

I need my invoice updated or changed.

Please find information here.

Is it possible to order a 2nd license at the price for "2 to 3 licenses".

Sorry but the payment system we use can not handle this.

Do I need to renew my license?

No. All licenses are perpetual. There are no yearly renewal fees and no hidden costs.

Modbus Poll:

Your question may be answered in the context-sensitive help. Press the "F1" key while using Modbus Poll.
Read the manual here.

Where do I enter the license key?

When you make a connection (F3) you are prompted to enter the license key.

I try to read from address 40010 but I get "illegal data address"

This is an exception returned from your server device. Modbus Poll use protocol addresses (0 - 65535). Try address 9. Read more here.

Timeout is staying on my screen. What should I check?

Read about error messages here.

Moving Modbus Poll to Another Computer

  1. On the old compuer, uninstall Modbus Poll.
  2. On the new computer, download and install the latest version. License key from 2019 or newer works with the latest version.
  3. Press F3 and enter your license key.

How do I uninstall Modbus Poll?

Simply uninstall from Add/Remove Programs in the Windows control panel.

Modbus Slave:

Your question may be answered in the the context-sensitive help. Press the "F1" key while using Modbus Slave.
Read the manual here.

Where do I enter the license key?

When you make a connection (F3) you are prompted to enter the license key.

Moving Modbus Slave to Another Computer

  1. On the old compuer, uninstall Modbus Slave.
  2. On the new computer, download and install the latest version. License key from 2023 or newer works with the latest version.
  3. Press F3 and enter your license key.

How do I uninstall Modbus Slave?

Simply uninstall from Add/Remove Programs in the Windows control panel.

WSMBS:

Your question may be answered in the included help file. Find the help file in the document folder where you installed WSMBS.

How do I upgrade to the most recent version?

This is free. Just download the new version and use it.

How do I open 2 serial ports?

You simply use 2 instances of the WSMBS control.

WSMBT:

Your question may be answered in the included help file. Find the help file in the document folder where you installed WSMBT.

How do I upgrade to the most recent version?

This is free. Just download the new version and use it.

How do I make 2 TCP/IP connections?

You simply use 2 instances of the WSMBS control.

MBAXP:

Your question may be answered in the included help file. Find the help file from the start menu.

I use MBAXP version 1.2. How do I upgrade to the most recent version?

This is free. Just download the new version and use it.

Do I have to buy a license of MBAXP for each program I distribute?

No. You can distribute your exe unlimited. Only you can change the exe. Your end users can not.

How do I make 2 TCP/IP connections?

You simply use 2 instances of the MBAXP ActiveX.

I got a error message saying "Run-time error 424, Object required"

Check if the Excel version you are running is 32 or 64-bit version. The installed MBAXP must match.

32-bit Windows:

  • 32-bit mbaxp.ocx is installed in c:\windows\system32
  • 64-bit mbaxp.ocx can't be installed

64-bit Windows:

  • 32-bit mbaxp.ocx is installed in c:\windows\SysWOW64
  • 64-bit mbaxp.ocx is installed in c:\windows\system32

(Note the stupidity of it all — the default regsvr32 is 64-bit and resides in the \windows\system32 directory. Note the "32" in system32 and the "32" in regsvr32 — quite misleading. However the 32-bit version of regsvr32 is found in the \windows\syswow64 directory. Note the "64" in the directory name. That’s also misleading.)

To run the 32-bit regsvr32, do this:

cd \windows\syswow64
regsvr32 mbaxp.ocx

To run the 64-bit regsvr32, do this:

cd \windows\system32
regsvr32 mbaxp.ocx

You must run the command prompt as administrator.

A simple solution if you want to run the command prompt as administrator is to open the Start Menu, type in "cmd"" in the bar along the bottom, then instead of just pressing enter, press CTRL+SHIFT+ENTER instead. It will then show up as ""Administrator: Command Prompt" in the window title.