· Product Introduction

The SPC series communication signal conversion modules are primarily designed for signal interference processing and conversion in industrial settings. Their core functions 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 automatic control systems across industries such as industrial automation, medical electronics, automotive manufacturing, power engineering, petrochemicals, aerospace, railways, and PLC applications.

The SPC8011-NA is an RS232 to RS485 signal repeater. It complies with the EIA/TIA RS485 standard, amplifying and isolating RS485 signals to extend communication distance. Employing high-speed opto-isolation protection, it addresses issues of signal relaying and isolation in complex electromagnetic environments. The module incorporates industrial-grade chips with superior anti-interference capabilities and features an intelligent directional circuit that automatically detects data flow direction. This ensures stable signals, secure and reliable data communication, and eliminates delay problems associated with serial signal transceiver switching.

This product requires a separate power supply and is mounted on a standard 35mm DIN rail, offering simple on-site installation and flexible use, suitable for a variety of field applications.

· Basic Parameters

Power Supply     DC12～36V(DC24V recommended)

Current Consumption ≤50mA @DC24V

Power Protection Reverse Voltage <-40V

Isolation DC1500V (Master, Slave)

Insulation Resistance ≥100MΩ (Master, Slave)

Electromagnetic Compatibility  Complies with GB/T182681 (IEC 6132-1)

Suitable Application  RS232 to RS485 systems requiring extended communication distance

· Serial Port Parameters

Input Signal 1 x RS232

Output Signal 1 x RS485

Operating Mode RS232 asynchronous full-duplex

                                RS485 asynchronous half-duplex differential

Communication Protocol  Independent of software protocol restrictions

Signal Level Standard RS485 differential level

                        Standard RS232 level

Load Capacity       Single RS485 interface supports up to 32 nodes

                              Distance between nodes ≤ 10 m

Baud Rate 300 – 230,400 bps (Auto-adaptive)

Transmission Delay  < 10uS

Protection Rating  RS232: ±15 kV ESD         RS485: 600W TVS 

Communication distance      RS232: 15 m (typical)       RS485: 1200 m (typical)

· Environmental Conditions

Operating Temperature -40℃～+80℃

Storage Temperature -40℃～+85℃

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

Atmospheric Pressure 80kPa～106kPa