Connect and capture
Open the port, watch traffic immediately and keep send and receive events in a readable order.
Serial Debug Platform
Serial Port Utility
A precise workspace for serial capture, protocol inspection, Modbus workflows and Cloud Sync operations across development, test benches and field service.
Windows 6.5.3 macOS 6.0.6
Multi-Port
Capture several serial links in one shared timeline.
Modbus+
Inspect RTU, ASCII, TCP and UDP traffic without changing tools.
Cloud Sync
Connect device records, messages, orders and licenses.
Real interface from Serial Port Utility 6.5.4.
Live capture and status tracking
Timestamps, wrapping and replay-friendly logs
Serial, network and device flows in one view
Core Capabilities
Built for the work between first signal and final delivery.
Keep the physical port, byte stream, protocol frame and service record close together so debugging stays traceable.
Inspect protocol frames
Switch between text and byte-level views for command protocols, binary payloads and CRC checks.
Coordinate service work
Use Cloud Sync to connect device onboarding, message history, order lookup and license status.
Version Activity
Current desktop releases, with dates you can verify.
See what is current before downloading, then review checksums and change notes on the downloads page.
Windows
6.5.3
Released on 2026-06-14
macOS
6.0.6
Released on 2025-09-03
Workflow
A compact path for repeatable diagnostics.
Connect
Match port parameters and start from a known link state.
Capture
Record the interaction timeline with clear timestamps.
Inspect
Check protocol format, payload content and timing behavior.
Deliver
Move findings into service, license or remote support workflows.
Use Cases
For embedded labs, industrial sites and remote maintenance teams.
The same interface can cover early board bring-up, PLC communication checks, serial-to-network gateway validation and post-delivery support.
- Compare traffic across multiple ports during master-slave testing.
- Review long capture sessions with wrapping, timestamps and stable display modes.
- Track device records and licenses when debugging continues after deployment.
ModeRTU
Function03 Read Holding Registers
Address0000
Quantity0002
01 03 00 00 00 02 C4 0B
Embedded development
Industrial control
Gateway diagnostics
Licenses and Pricing
Choose the activation and purchasing workflow that fits your use case.
Prices below show WeChat Pay in CNY and PayPal in USD. Final checkout uses the selected payment channel.
For individual purchasers
- Online order and email delivery
- Standard license activation
- Personal billing details
1 Year¥19.90$5.90
3 Years¥29.90$9.90
Lifetime¥59.90$19.90
For organization purchasing
- Offline activation support
- Invoice information at checkout
- Organization-oriented delivery workflow
1 Year¥69.90$29.90
3 Years¥99.90$39.90
Lifetime¥199.90$99.90