Serial Port Monitor
Serial Port Monitor monitors, displays, logs and analyzes all serial port activity in a system.

You need to track the data flow between the application and serial port and maybe substitute some data with your own commands.
Port Sniffer ActiveX allows monitoring all data exchange among serial ports and applications. All data is intercepted by a virtual copy of a real serial port created by RS232 Sniffer AX, so you will be able to easily substitute the commands with your own. This way you control the data flow up to your needs.
Serial Port Sniffer ActiveX Control detects baud rate, ring changes, as well as changes in control lines, etc. Serial Port Sniffer AX methods allow checking whether the port is being sniffed already, open the serial port for sniffing and close the port when finished sniffing.
With Port Sniffer ActiveX you not just monitor serial communication, but you can also substitute certain data with your own commands.
All Signal lines are supported by Serial Port Sniffer ActiveX Control, including state changes.
| # | Feature | Serial Monitor AX | Serial Sniffer AX |
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| 1 | Change DTR |
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| 2 | Change DSR |
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| 3 | Change RTS |
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| 4 | Change CTS |
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| 5 | Open/Close port |
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| 6 | Change Baudrate |
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| 7 | Change Handflow control |
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| 8 | Change Line control |
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| 9 | Detect Ring |
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| 10 | Write to port |
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| 11 | Read from port |
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| 12 | OnTimeouts |
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| 13 | Change control chars |
+(OnIrp)
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| 14 | On/Off break |
+(OnIrp)
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| 15 | Read data substitution |
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| 16 | Write data substitution |
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| 17 | Exact events timestamps |
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| 18 | Read 6 Kb of data(sec) |
6
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10
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| 19 | Stop sniffing when port is opened |
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| 20 | Start sniffing when port is opened |
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| 21 | Trace the application that opened port |
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