JCH Modbus Studio

Fast Modbus TCP testing with clean logs: client, server and simulator in one app

JCH Modbus Studio is a compact tool to test and analyze Modbus TCP communication.

Features:

• Modbus TCP client (master): define coils/registers and read/write values 
• Modbus TCP server (slave/simulator): provide your own coils/registers
• Separate client and server logs (requests/responses/errors)
• Function code filters for server logs
• Favorites for connections and server setups (with editable names)
• Export session logs via the iOS share sheet
• Optimized for iPad (portrait/landscape, scrollable panels)

Note: Modbus TCP is typically unencrypted. Use a trusted network and/or VPN in production environments.