MA01-AXCX4040-V2P Industrial-Grade Remote IO Module: Perfect Combination of Precise Control and Reliable Monitoring
With the rapid development of industrial automation today, stable signal acquisition and precise command output have become the key to stable operation of the system. With its excellent industrial-grade design and flexible functional configuration, the MA01-AXCX4040-V2P serial port IO module has become an ideal choice for smart manufacturing, energy monitoring, and smart cities. This RS485 module that supports 4 digital inputs and 4 relay outputs provides a reliable data interaction solution for complex industrial scenarios with Modbus RTU protocol compatibility, three-proof paint protection, and a wide voltage operating range.

Ⅰ. Core functions: Precise control and monitoring of industrial scenarios

1. Multi-channel signal acquisition and control

4-channel digital input (DI)
Supports dry node signal acquisition, flexible trigger mode (rising edge/falling edge/level trigger), default rising edge trigger, adjustable filter parameters (1-16 levels), to ensure that sensor signals can be accurately captured in electromagnetic interference environment. The maximum acquisition frequency of 1kHz is suitable for high-frequency signal monitoring scenarios.
4-channel relay output (DO)
Adopting C-type relay design, each output provides normally open (NO) and normally closed (NC) contacts, with a contact capacity of up to 250V/10A, which can drive high-power devices. The output mode supports level mode, pulse mode, follow mode and cycle mode to meet the start and stop logic requirements of different devices.

2. Industrial-grade communication and protocol 

compatibility
RS485 interface
Adopting differential signal transmission, it has strong anti-interference ability, and the transmission distance can reach 1200 meters (theoretical value). It supports multi-node networking (up to 32 nodes) and is suitable for distributed control systems.
Modbus RTU protocol
Fully compatible with mainstream industrial automation software (such as KingView, WinCC) and PLC (such as Siemens S7-1200, Mitsubishi FX series), the device address is configurable (0-255), the default address is 1, and the broadcast address is 0, which is convenient for rapid integration into existing systems.

3. Intelligent diagnosis and maintenance

Status indicator
The power indicator (green is always on) and the communication indicator (red flashing, cycle 60ms) directly reflect the module operation status, which is convenient for on-site debugging.
Reset button
Short press (50ms-1.5s) can quickly restart the module, and long press for 5-10 seconds to restore the factory settings, greatly reducing the difficulty of on-site maintenance.
Communication interruption, output (DO) reset
The device has a communication self-diagnosis function, and the output (DO) can be configured to reset when the communication is interrupted; it greatly improves the safety and reliability of on-site use

Ⅱ. Industrial-grade design: reliable guarantee for harsh environments

1. Wide voltage operation and low power consumption

Wide voltage input
Supports DC 8-28V power supply, compatible with 24V DC power supply and 12V vehicle power supply commonly used in industrial sites, with a current of only 50mA@12V, and low energy consumption.
Power supply protection
With reverse connection protection and short circuit protection functions, it can avoid module damage caused by misconnection of power supply.

2. Triple-proof paint protection: to cope with harsh environments

Anti-mold, anti-humidity, anti-salt spray
The circuit board is sprayed with triple-proof paint, which meets the IP65 protection level (needs to be used with a sealed housing), and is suitable for:
High humidity environment: such as food processing workshops, sewage treatment plants;
Corrosive environment: chemical plants, coastal areas;
Dusty environment: mines, building materials factories.

3. Compact design and flexible installation

Dimensions and weight
The size is only 115*90*40mm, and the weight is 165±5g, which can be easily embedded in the control cabinet or distributed installation.
Installation method
Supports rail installation (standard 35mm DIN rail) and positioning hole fixing to meet the requirements of different cabinet layouts.

4. High protection isolation

Isolation
Supports power supply, IO input and output and RS485 isolation to adapt to complex environments.

Ⅲ. Typical application scenarios

1. Smart manufacturing

Production line status monitoring

Connect photoelectric sensors or proximity switches to monitor the start and stop status of equipment in real time, upload data to the SCADA system through the Modbus protocol, and realize OEE (overall equipment efficiency) analysis.
Safety interlock control
In stamping machinery, the emergency stop button signal is collected through DI, and DO controls the cylinder solenoid valve to respond quickly to ensure safe operation.

2. Energy and infrastructure

Photovoltaic power station monitoring
Connect the DC circuit breaker status signal of the junction box, remotely monitor the operation of the power station, and optimize the power generation efficiency by combining the inverter data.
Building automation
Connect temperature and humidity sensors (DI triggers threshold alarm), control the ventilation system relay, and adjust the indoor environment.

3. Smart agriculture

Irrigation system control
Trigger irrigation instructions through soil moisture sensors (DI), and DO controls the water pump relay to achieve precise irrigation.
Greenhouse environment control
Link CO2 concentration sensors with fill light/fan control to improve crop growth efficiency.