Winmodbus
A Windows Modbus Slave Simulator
* Understand what’s going on with Message Explanations,    Field Breakdowns and Custom Register Naming. * Ethernet TCP and Serial RS-232 / RS-485 support. * Protocol Simulator for Modbus RTU, TCP and ASCII. * Slave Failure Testing Functions - CRC Fails and Link Breaks * Link data to Excel or other packages that support DDE * Highly compact. Quick Windows Install/Uninstall. * Designed, written and tested in-house by Windows Programmers   with years of Modbus experience. * “Simple, Elegant, Efficient & Reliable”
Last Updated: 03/07/2016 Winmodbus is an Abbeytek product
Function Ranges Sensible default functions get you started quickly. Full control over functions, addresses and number formats ensures you can cope easily with any tricky non-standard scenarios
Data Map Define your registers. Name them and WinModbus will use the names in its breakdowns, making it even easier to tell just what’s going on. Access data in real time from Excel, etc.
Traffic Window See your Modbus  conversations, decoded into natural language to find and fix problems fast Build your datamap directly from your  messages to save you time.
Message Breakdown Get a breakdown on any message to see exactly what’s happening. See common fields  separated out and explained. Be a Modbus Expert.
Download the fully functional evaluation version here. (Version History is here) The evaluation version is fully functional for 14 days. After this, a purchase must be made to continue use. After download, just “Open” the file and it will install on your PC. Once installed, you can run it from the Windows Start Menu.
Winmodbus Slave Simulator Price: £62.50 Includes lifetime upgrade to all future versions and e-mail support.
Windows XP, Vista, 7, 8, 8.1, 10
Customer Quotes: “I've been browsing around for a good ModBus slave simulator for a while and tested several. Yours is by far the best I've tried, it's very user friendly, easy to connect, professional looking, lots of information right in the main window and it works. “ “very powerful; way cool”