Modbus Slave for PPC


Screen Shots


Modbus Slave for the Pocket PC

Ver 1.05




The Modbus Slave program allows your Pocket PC to emulate up to 10 Modbus slave devices which can communicate with another Master device connected to the serial port or ethernet network port of your Pocket PC. The Master device can be a PLC, a SCADA system or any other device or piece of software which runs as a Modbus Master.

You can also configure up to 10 data blocks to emulate the memory map of the slave devices. The individual data blocks are shown in a grid format on screen and can display up to 64 words of information at a time. You can easily scroll backwards and forwards through the memory map of the slave devices to show more data as required.

The data can be shown in a variety of formats including :

  • Hex
  • Decimal
  • Binary
  • Unsigned Short
  • Signed Short
  • Unsigned Long
  • Signed Long
  • Float

Double words formats can also be shown in High/Low or Low/High word format.

You can simply click on a cell in the grid and modify the data value shown.

A scripting facility is available so you can write your own code to simulate simple PLC type programs within the slave devices. These can be used for simple timers, watchdogs, setting values on change of state etc. You can find more information on the scripting facilities and see more screen shots of the program here.

A protocol trace screen is also available to show the raw data being sent and received from the Modbus devices. This trace can also be sent to a file if required.

You can download a free trial copy of the program by clicking here.

If you wish to purchase a registration code for the program and you have a debit or credit card, please click the Buy Now button below to enter The ModSoft Software Store and make your secure purchase.

Please quote the quantity and the Device Names of the Pocket PC's you require the software for. I will return your registration codes upon confirmation of payment which will usually be within 24 hours. (You can find the Device Name at Start > Settings > System > About > Device ID and it is the contents of the Device Name field - please make sure you type it correctly, including the case !)

Click here to buy Modbus Slave for only 12.49 per Pocket PC

or click here to buy both Modbus Master and Modbus Slave for only 19.99 per Pocket PC !

Revision History
Date Version Changes
01/03/05 1.05 Updated contact details with addresses
12/12/03 1.04 Added ethernet network support
19/11/03 1.03 Minor buffer overflow bug fix
09/07/03 1.02 Uses Owner Name or Device ID for registration code
09/05/03 1.01 Made COM port configurable from COM1 to COM9
28/01/03 1.00 Initial Release

Home ] Screen Shots ]

Send mail to with questions or comments about this web site.
Copyright 2006 Jon Welch
Last modified: 12-09-2011