Modbus RTU,
live in any browser.
The official desktop software for the iCTRL-20. Connect your RS485 bus and watch every I/O value stream live to any browser — role-based access, hardware config, and a tamper-evident audit trail included.
Everything you need for industrial I/O
From live data streaming to tamper-evident audit trails, DZVOLT UI covers every layer of industrial monitoring and control.
Real-Time I/O Streaming
Values are pushed from hardware to every connected browser the instant they change. Configurable poll rate from 5 ms to 60 s with per-register history.
Browser-Based Hardware Control
Toggle digital outputs and set analog levels from any browser. Power alarms automatically block AO writes, and every command is confirmed with instant feedback.
Role-Based Access Control
Administrators connect locally with full control. Operators connect remotely with I/O read and write access. Every session is authenticated, attributed, and tracked.
Tamper-Evident Audit Trail
Every register write logged with operator name, old value, new value, and timestamp. Export to CSV for compliance reporting — 100% write coverage, no blind spots.
Configuration Backup & Restore
Export any module's full register configuration to a .dzvoltcfg file and restore it with one click — ideal for replication, recovery, and deployment.
Auto Bus Scan
Detect all iCTRL-20 modules on the RS-485 bus automatically in ~5 seconds. Scans slave IDs 1, 2, 3, 4, 23, 34, 24 and 234 — found modules are added to the workspace ready to use.
Custom Labels & Section Visibility
Rename any I/O point, assign engineering units (°C, mA, bar), and hide unused sections — layouts persist per module across sessions.
Operator Management
Create and manage named operator accounts from the Preferences panel. Every write is attributed by account name in the audit log — no shared credentials.
Four I/O types, one consistent interface
Every module's I/O is organized into typed sections. Each type has a dedicated detail panel with context-appropriate controls and history.
Digital Input DI
On/off signals, pulse counting, DI→DO hardware interlocks.
Digital Output DO
Relay and transistor control with on/off-delay timers per channel.
Analog Input AI
0–10 V / 4–20 mA with configurable min/max alarm thresholds.
Analog Output AO
0–10 V drive signal settable from any authorized browser.
Built on open industrial standards
No proprietary protocols, no vendor lock-in. Modbus RTU over RS485 is the most widely deployed serial standard in industrial automation.
Available on all platforms
Ships as a self-contained desktop application. Contact us to request the installer for your platform.
Windows
Windows 10 / 11 · 64-bit
macOS
macOS 12 or later
Apple Silicon & Intel
Linux
Ubuntu 20.04 / Debian 11
or compatible
Ready to deploy?
The documentation covers everything from first launch to advanced configuration.