M31-AXAX4040G-U 4DI+4DO High-performance distributed I/O host Standard ModBus protocol ModBus TCP/RTU High response and high protection
[Specifications]： 4DI+4DO
[Communication Interfaces]： RJ45, RS485
[Operating Voltage]： DC 9～36V
[Installation Method]：Positioning hole, DIN rail mounting
[Size]：110*40*100mm
[Introduction]：This high-performance distributed I/O host supports standard Modbus TCP and Modbus RTU protocols, suitable for data acquisition and control. The device is equipped with dual 10/100M adaptive Ethernet interfaces and supports switch functionality. The internal bus speed can reach up to 1ms. It features a reset function for both digital and analog outputs in case of network interruption, ensuring restoration to a preset state. The product casing is coated with a conformal coating, providing protection against mold, moisture, and salt spray.
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| M31-AXAX4040G-U Port and Button Description: | ||
| silkscreen | name | illustrate |
| DI1 | DI1 digital input | DI1 is a digital input interface used in conjunction with COM1. |
| COM1 | DI1 Digital Input Common Terminal | DI1 Common terminal of digital output interface |
| DI2 | DI2 digital input | The DI2 digital input interface is used in conjunction with COM2. |
| COM2 | DI2 digital input common terminal | The common terminal of the DI2 digital output interface |
| DI3 | DI3 digital input | The DI3 digital input interface is used in conjunction with the COM3. |
| COM3 | DI3 Digital Input Common Terminal | The common terminal of the DI3 digital output interface |
| DI4 | DI4 digital input | The DI4 digital input interface is used in conjunction with the COM4. |
| COM4 | DI4 common terminal for digital inputs | DI4 common terminal of digital output interface |
| DO1 | DO1 digital output | DO1 is a digital output interface used in conjunction with COM1. |
| COM1 | COM port of DO1 | DO1 Common terminal of digital output interface |
| DO2 | DO2 digital output | DO2 is a digital output interface used in conjunction with COM2. |
| COM2 | DO2 COM port | DO2 Common terminal of digital output interface |
| DO3 | DO3 digital output | The DO3 digital output interface is used in conjunction with COM3. |
| COM3 | DO3 COM port | DO3 Common terminal of digital output interface |
| DO4 | DO4 digital output | DO4 is a digital output interface used in conjunction with COM4. |
| COM5 | DO4 COM port | DO4 Common terminal of digital output interface |
| NC | Empty terminal (Not Care) | No actual circuit connection function |
| NC | Empty terminal (Not Care) | No actual circuit connection function |
| NC | Empty terminal (Not Care) | No actual circuit connection function |
| Reload | Factory reset/auto-negotiation | Press and hold for 5-10 seconds to restore factory settings; double-click within 2 seconds to automatically negotiate the I/O expansion module. |
| A(RS485) | RS485 A interface | RS485 A interface |
| B(RS485) | RS485 B interface | RS485 B interface |
| G(RS485) | RS485 G interface | RS485 G interface |
| ON | Grounding | Grounding |
| V- (DC9-36V) | negative terminal of power supply | DC (9-36V) power supply negative terminal interface |
| V+ (DC9-36V) | Positive power supply | DC (9-36V) power supply positive terminal interface |
| LAN1 | network port | Standard RJ45 network cable interface |
| LAN2 | network port | Standard RJ45 network cable interface |
| M31-AXAX4040G-U Indicator Light Description: | ||
| silkscreen | name | illustrate |
| RUN | Power indicator light | Red LED light; On: System power supply is normal; Off: System power supply is abnormal. |
| BUS | Device bus status indicator | Yellow LED light; On: Internal bus of the device is operating normally; Off: Internal bus of the device is completely malfunctioning. |
| Flickering: There may be an abnormality in the operation of the device's internal bus. | ||
| STA | Bus communication indicator | Blue LED light; flashing: indicates data exchange between the host and the expansion module; off: indicates no data exchange between the host and the expansion module. |
| DI1 | DI1 Input Indicator | Green LED light; On: DI1 valid input; Off: DI1 invalid input. |
| DI2 | DI2 Input Indicator | Green LED light; On: DI2 input is valid; Off: DI2 input is invalid. |
| DI3 | DI3 Input Indicator | Green LED light; On: DI3 input is valid; Off: DI3 input is invalid. |
| DI4 | DI4 Input Indicator | Green LED light; On: DI4 input is valid; Off: DI4 input is invalid. |
| DO1 | DO1 output indicator light | Green LED light; On: DO1 relay closed; Off: DO1 relay open. |
| DO2 | DO2 output indicator light | Green LED light; On: DO2 relay closed; Off: DO2 relay open. |
| DO3 | DO3 output indicator light | Green LED light; On: DO3 relay closed; Off: DO3 relay open. |
| DO4 | DO4 output indicator light | Green LED light; On: DO4 relay closed; Off: DO4 relay open. |