ADLINK Matrix MXC-2000 Deployment and Troubleshooting

Troubleshooting: If the network port indicator light is not on, first check if the network cable is crossed or directly connected (the network card supports Auto MDI/X), then check if "Onboard LAN" is enabled in the BIOS, and finally check if the driver is installed correctly.

6.2 Serial port mode switching

COM1~COM2 are RS-232 (fixed), while COM3~COM4 can be switched to RS-422/485 (half duplex or full duplex) through BIOS or jumper. After switching, please note:

RS-422/485 requires terminal resistance matching (with an external 120 Ω resistor for long distances).

In 485 half duplex mode, the software needs to control the direction (automatic direction control depends on the chip, but some applications require manual RTS switching), and it is recommended to use the flow control option in the driver.

Common phenomenon: garbled or packet loss in serial communication. Solution steps:

Check if the baud rate, data bits, stop bits, and checksum are consistent with the other end.

Check if the grounding wire is connected (RS-232 must be grounded together).

If using RS-485, ensure that there is only one master device on the bus and that the terminal resistors are properly terminated.

Isolation DIO application scenarios and wiring

The onboard isolation DIO is very suitable for directly connecting PLCs, photoelectric sensors, and small relays, eliminating the cost of external expansion IO modules.

DI application: Connect the output of the 24V sensor to the DI terminal and program to read the status. Note that there is an optocoupler inside the DI, with an input current of approximately 5mA, and no external current limiting resistor is required (built-in).

DO application: Each channel can drive 24V/0.5A load (resistive), used to light up indicator lights or control micro solenoid valves. If the load current exceeds 0.5A, an intermediate relay needs to be connected.

Wiring safety:

Use shielded cables and connect the shielding layer to the chassis ground.

The isolated power supply (VISO) and logic power supply (VCC) are completely independent, but it is necessary to ensure the stability of the logic power supply (5V/3.3V), otherwise it may cause DO misoperation.

List of Common Malfunctions and Quick Solutions

Possible causes and solutions for the fault phenomenon

The polarity of the power supply is reversed without any response when powered on; Check the positive and negative polarity when the input voltage is below 9V; Measure whether the input voltage is ≥ 9V

Suddenly restarting the CPU during system operation and overheating (exceeding 90 ℃); Check the ambient temperature for insufficient power capacity and increase heat dissipation; Replace with a higher current power supply (≥ 3A)

PCIe card cannot recognize poor slot contact; Insufficient bandwidth resources, re plug and unplug; Disable other PCIe occupying devices (such as SATA) in BIOS

The isolated DI reading remains unchanged, and the external power supply is not connected; Polarity error; Check for optocoupler damage and VISO power supply; Confirm the COM connection method; Measure the DI terminal voltage with a multimeter

Unstable network port connection, excessively long network cable (>100m); The grounding loop causes noise and shortens the network cable; Use shielded network cables and single ended grounding; Adjust duplex mode to 100M full duplex

CF card cannot boot partition not activated; Check the boot sequence in BIOS for file system corruption; Use bootsect to repair the boot sector

Serial port can only receive but cannot send driver direction control issue (RS-485). Check if automatic direction control is enabled or switch to RS-232 mode to test hardware

VGA display resolution is abnormal and the correct graphics card driver is not installed; Install Intel 945GSE driver with refresh rate exceeding limit; Set the resolution to 1024x768@60Hz

Maintenance and long-term reliability recommendations

Firmware upgrade: Regularly check for BIOS updates (ADLINK official website), and fix temperature monitoring deviations and PCIe compatibility with new versions.

Backup system: Use Ghost or Clonezilla to save the CF card image to a network server, which can be quickly restored once the card is damaged.

Record work logs: Regularly collect CPU temperature, motherboard voltage, and fan speed (if any) in the application and upload them to SCADA for predictive maintenance.

Grounding specification: The controller and cabinet should be grounded together, and the grounding resistance should be less than 4 Ω to avoid CPU lockout caused by high-frequency interference.