Docklight

Docklight is a testing, analysis and simulation tool for serial communication protocols (RS232, RS485/422 and others). It allows you to monitor the communication between two serial devices or to test the serial communication of a single device. Docklight is easy to use and runs on almost any standard PC using Windows operating system.

Simulating serial protocols
Logging RS232 data
Detecting specific data sequences
Responding to incoming data