Product focus
ModbusSim simulates TT and VT compressor behavior so external controllers can be tested against believable startup, running, unload, warning, fault, and reset responses.
About
ModbusSim™ is built for practical HVAC control testing.
ModbusSim is a Windows desktop application for testing external HVAC compressor control systems over Modbus TCP or RTU. It is published by Systèmes ModbusSim Inc. for engineering teams that need realistic compressor behavior before site commissioning.
Trademark notice
ModbusSim™ is a trademark of Systèmes ModbusSim Inc. Product names, screenshots, and documentation identify the ModbusSim application and support workflow.
Support channel
For installer, license, technical support, product defect, or policy questions, contact info@modbussim.com.
Payment and Paddle readiness
Early access is handled by email while online checkout is prepared. When Paddle checkout is enabled, Paddle.com is planned to process online orders as the merchant of record for payment, tax, receipts, buyer payment support, refunds, and returns.
Product support remains with Systèmes ModbusSim Inc. through info@modbussim.com.
Policy links
The legal page includes the current website terms, privacy notice, and refund and return policy required before trial, purchase, or support requests.