Serial Port Tool Comm Operator v4.2.0.1108 | 2.67 MB Comm Operator is a powerful tool for serial port communication. It can act as peripheral device emulator related RS232 COM port. It can also act as a debug tool for device's test and development.The built-in event driven auto send mechanics makes Comm Operator a full functioned device simulator with just a few mouse clicks. By this way, RS232 related software can be developed offsite, no need for device, only the rule script is enough.