Multi-port monitoring
Capture multiple COM ports in one session for coordinated device debugging, master-slave comparison and post-incident review.
- Unified send/receive ordering
- Less window switching
- Fits gateway and master-slave test benches
Features
Features for protocol tracing, device bring-up and field diagnostics.
Scan the capabilities by real debugging jobs: connect ports, inspect bytes, validate protocols and keep field-service records aligned.
Real interface from Serial Port Utility.
Capability Matrix
Organized around real debugging actions, not menu names.
Every capability links to the matching chapter in the help center, so you can move from overview to usage steps in one click.
ASCII and Hex views
Inspect text and binary protocols precisely to isolate byte-level differences, encoding issues and CRC-related faults.
- Switch between ASCII and Hex
- Built for frame-level troubleshooting
- Easier cross-checking against device docs
Network protocol support
Debug TCP and UDP next to serial traffic, covering TCP server and client plus UDP client, server and multicast, so gateway and protocol-bridge issues stay in one view.
- TCP server (multi-client) and TCP client
- RFC 2217 serial control, as a server or on a remote port
- UDP client, server and multicast (UDP group)
- One entry point instead of multiple tools
Timestamped logging
Attach a timestamp to each line automatically for long-running captures, incident replay and post-delivery troubleshooting.
- Configurable time formats
- Rotate logs by size or time
- Auto-wrap for reviewability
Modbus frames and checksums
Build and verify Modbus RTU frames with the built-in CRC-16/MODBUS, backed by a wider CRC-8/16/32 checksum library, all in HEX or ASCII.
- CRC-8/16/32 family: MODBUS, USB, CCITT, XMODEM and more
- Auto-append the checksum when sending
- Works with RS232/485/422
Quick send and auto send
Keep frequent frames in a reusable command list and replay them automatically for polling, burn-in tests and repeated protocol checks.
- Loop send at a fixed interval
- Line-by-line send for command sequences
- Send history for repeated debugging
Flexible connection parameters
Match any device quickly with standard presets plus fully custom baud rates, framing and flow-control options.
- Custom baud rates beyond the presets
- Data bits, parity, stop bits and flow control
- Independent Append Line Ending and Enter Sends controls
Control lines and Break
Drive the DTR and RTS outputs directly and hold a Break condition, right beside the same data view you debug in.
- Toggle DTR and RTS per connection
- Hold-to-transmit Break signal
- Grouped in the Quick Settings panel
XMODEM and YMODEM file transfer
Send firmware straight into a bootloader, or pull a file back, on the connection you already have -- serial, TCP or a remote serial port.
- XMODEM, XMODEM-CRC, XMODEM-1K, YMODEM and YMODEM-G, both directions
- Works over serial, TCP and RFC 2217 remote serial ports
- No second terminal program for a firmware update
Cloud sync extension
Bring devices, licenses and message records into the backend so client-side diagnostics and platform operations stay connected.
- Device onboarding
- License status tracking
- Remote issue triage support
Built For Daily Use
Turn problem visibility into actual delivery progress.
- Customize timestamps, encoding and display modes to reduce manual translation.
- Arrange the Quick Settings panel so only the options you actually use stay on screen.
- Auto-wrap and log review fit long capture sessions and production traces.
- Use Cloud Sync to connect devices, licenses and message records in one backend.
One Entry Point for Three Jobs
Use it for protocol debugging in development, interaction validation in testing and device-license coordination in operations.
Use Cases
Covers common scenarios from development to field work.
Embedded development
Use it during MCU, sensor and board bring-up to verify low-level serial links and protocol exchange quickly.
- Watch UART output from the first power-on
- Check sensor frames against the datasheet
Industrial control
Fits PLC, meter and industrial device communication checks, helping isolate master-slave link and timing issues.
- Poll PLC and meter registers over Modbus RTU
- Spot parity, timing and wiring mismatches early
Gateway diagnostics
In serial-to-TCP or UDP gateway scenarios, you can validate physical-port and network-side traffic side by side.
- Compare serial and network payloads in one view
- Validate forwarding behavior before deployment