· Product Introduction

The SPC series communication signal conversion modules are specifically designed for signal interference suppression and signal conversion in industrial environments. Their core functionalities include ground loop isolation, electromagnetic interference elimination, enhanced circuit load capacity, and support for device signal sharing and monitoring. They are widely used in measurement and control systems and various industrial automation applications, including industrial automation, medical electronics, automotive manufacturing, power engineering, petrochemicals, aerospace, railway systems, and PLC-based control systems.

The SPC8080-MB series 1 master to 8 slave RS485 serial communication module incorporates high-speed opto-isolation protection and provides RS485 serial signal distribution to eight independent RS485 channels. When industrial applications require star-topology connections—which may cause communication abnormalities—this RS485 hub resolves such issues by converting the topology while simultaneously amplifying and isolating RS485 signals to extend communication distance.

This product requires a separate power supply and is mounted on a standard 35mm DIN rail, offering simple on-site installation and flexible use, adapting to various field applications.

· Basic Parameters

Power Supply DC12～36V(DC24V recommended)

Power Consumption ≤60mA @DC24V

Power Protection Reverse Voltage <-40V

Isolation DC1500V (input and output)

Insulation Resistance ≥100MΩ (input and output)

EMC Compatibility Complies with GB/T18268.1 (IEC61326-1)

Applicable on-site equipment Equipment with RS485 communication interface

· Serial Port Parameters

Input Signal 1 RS485

Output Signal RS485

Number of Output Channels 8

Signal Level Standard RS-485 differential level

Transmission Rate 300-230400bps (auto-sensing)

Transmission Delay <10µs

Operating Mode RS-485 asynchronous half-duplex differential

Protection level 600W TVS

Communication distance RS485: 1200m (typical)

· Environmental Conditions

Operating Temperature -40℃～+80℃

Storage Temperature -40℃～+85℃

Relative Humidity 10%～90%RH (non-condensing)

Atmospheric Pressure 80kPa～106kPa