The Ebyte MA01-AACX2240 is an industrial Modbus RTU remote I/O network module equipped with 2 digital inputs (DI), 2 analog inputs (AI), and 4 relay outputs (DO) over RS232/RS485 serial interfaces for PLC acquisition and remote control.
| Technical Parameter | MA01-AACX2240 Specification | Remarks / Details |
|---|---|---|
| I/O Configuration | 2DI + 2AI + 4DO | Multi-channel sensor acquisition & relay control |
| Digital Inputs (DI) | 2 Channels | Supports dry/wet contact switching signals |
| Analog Inputs (AI) | 2 Channels | Supports standard industrial sensor acquisition |
| Digital Outputs (DO) | 4 Channels (Relay Switch Output) | Remote relay switching and device actuation |
| Communication Interface | RS232 / RS485 | Modbus RTU protocol compliant for SCADA/PLC |
| Installation Method | Positioning Hole Mounting | Secure chassis and cabinet integration |
| Dimensions & Weight | 115 x 90 x 40 mm, Weight: 160 +/- 5 g | Compact industrial form factor |
Practical Application Scenarios
1. Smart Pumping Station Environmental & Actuation Monitoring
In automated water treatment facilities, engineers need to monitor liquid levels and pressure while controlling valve actuators. The MA01-AACX2240 collects continuous fluid parameters via its 2 analog inputs (AI) and monitors door access or float switches using its 2 digital inputs (DI). When connected to host PLCs or SCADA platforms over RS485, the module uses its 4 relay digital outputs (DO) to trigger pumps or alarms remotely without installing complex local control boards.
2. Factory Assembly Line Machine State Acquisition & Interlocking
Automated production lines require real-time feedback on machine operation states to trigger upstream/downstream safety interlocks. By wiring photoelectric limit switches into the module's 2 digital inputs (DI) and temperature sensors into the 2 analog inputs (AI), plant managers get instant status polling over RS232 or RS485. System controllers send Modbus commands to actuate the 4 digital outputs (DO) to stop conveyors or activate warning lights whenever anomalous conditions arise.
3. Integrated HVAC & Environmental Control in Server Equipment Rooms
Data centers and server enclosures require continuous monitoring of ambient conditions and automated HVAC control. The module acquires real-time humidity and ambient temperature values via its 2 analog inputs (AI) while verifying door sensor status through its 2 digital inputs (DI). Utilizing serial commands from central SCADA software, the module actuates its 4 relay digital outputs (DO) to engage auxiliary cooling fans, exhaust systems, or backup power contactors.
FAQ Section
1. How does the MA01-AACX2240 integrate into existing Modbus RTU networks?
The module operates as a standard Modbus slave device over its RS232 or RS485 serial ports. Industrial PLCs, touchscreens, or configuration software can poll input registers to read the status of the 2 digital inputs (DI) and 2 analog inputs (AI) or write holding registers to control the 4 relay digital outputs (DO) using standard Modbus command sets.
2. Can the 4 relay digital outputs (DO) be controlled automatically based on input states?
While the module reports DI and AI data and executes DO switching commands sent over RS232/RS485, centralized logic control is handled by the connected host controller (such as a PLC or industrial PC). The host software reads the input data frames, evaluates operational thresholds, and issues corresponding relay switching commands to the module's DO channels.
3. What mounting options are available for installing this remote I/O module in industrial panels?
The MA01-AACX2240 features integrated mechanical positioning holes on its 115x90x40mm housing. This allows field engineers to mount the 160g module directly onto control cabinet backplanes or machine enclosures using screws, ensuring vibration-resistant installation in harsh industrial environments.
