Quick start
Install the app, find the COM port and complete the first successful send and receive.
Quick startDocumentation search
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Serial connection parameters
Ports, baud rate, framing, flow control, Append Line Ending and Enter Sends.
Serial connection parametersQuick Settings panel
Show, hide and reorder connection, receive and send controls.
Quick Settings panelIndicator lamps and control lines
Understand TX/RX activity, modem lines, DTR/RTS control and Break.
Indicator lamps and control linesText, Hex and encodings
Readable commands, binary frames, byte checks and the GB18030/GBK/Big5 encodings.
Text, Hex and encodingsAutomatic send and command lists
Loop commands, send lists line by line and reuse send history.
Automatic send and command listsLogs and long-running capture
Capture timestamped evidence and plan log rotation for long-running tests.
Logs and long-running captureCRC and Modbus checks
Check payload bytes, algorithm parameters, CRC byte order and raw responses.
CRC and Modbus checksTCP, UDP and RFC 2217 debugging
Debug TCP Client, TCP Server, UDP and RFC 2217 traffic alongside the serial link.
TCP, UDP and RFC 2217 debuggingCloud Console
Live viewing, remote send and port control, quota behavior and privacy.
Cloud ConsoleTroubleshooting checklist
Diagnose missing ports, open failures, resets, no data and unstable links.
Troubleshooting checklistOrders, activation and support
Orders, offline activation, Cloud Sync and the support evidence checklist.
Orders, activation and supportExpose a serial device over TCP
Let a remote application access an RS-232 or RS-485 device through a TCP server.
Expose a serial device over TCPConnect an isolated site outward
Use an outbound TCP client when the device site cannot accept inbound connections.
Connect an isolated site outwardMonitor a serial conversation inline
Capture both directions between an existing host and device without changing the protocol.
Monitor a serial conversation inlineForward serial telemetry over UDP
Turn NMEA or sensor messages into correctly framed UDP datagrams for a LAN collector.
Forward serial telemetry over UDPPoll a Modbus RTU device reliably
Build a repeatable request, verify CRC and separate timeout from framing failures.
Poll a Modbus RTU device reliablyCapture an intermittent fault overnight
Record timestamped traffic with bounded files and preserve a useful incident window.
Capture an intermittent fault overnightAssist an on-site serial session remotely
Inspect live traffic in a browser and grant send or port control only when needed.
Assist an on-site serial session remotely