Isolated RS-232 to RS-485 Signaling Converter
This project provides a solution for converting RS232 signaling to RS485 signaling. This allows long-distance communication since the range supported by RS232 is normally less than 50 feet while RS485’s range can exceed 1000 feet.
This project provides a solution for converting RS232 signaling to RS485 signaling. This allows long-distance communication since the range supported by RS232 is normally less than 50 feet while RS485’s range can exceed 1000 feet. The design features an RS232 transceiver, an RS485 transceiver, a multivibrator, and a digital isolator with integrated power to implement bidirectional half-duplex communication without any software interference. The board has been tested for up to 800 feet in length with a two-wire twisted pair cable. Up to 115200 baud rate communication between two PCs via serial port has been successful. The design features the industrial standard IEC 61000-4-2 and 61000-4-4 protection with 5000 Vrms isolation protection.
Circuit Courtesy: Texas Instruments Reference Design
Key Features
- Operating power supply 3.3V and 5V
- Single Supply Operation
- Convert RS232 to RS485 signaling for bidirectional half-duplex communication
- Without any Software Interference
- Industrial-level ESD Protection
- Isolation: 5000 Vrms Isolation Protection.
- Extend System Topology from Point-to-Point to Multi Drop
- Cable Length up to 1000 Feet
- Hot Plug-in Feature
- 4 x 3 mm Mounting Holes
- PCB Dimensions 62.56 x 31.99 mm
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This project provides a solution for converting RS232 signaling to RS485 signaling. This allows long-distance communication since the range supported by RS232 is normally less than 50 feet while RS485’s range can exceed 1000 feet.
This project provides a solution for converting RS232 signaling to RS485 signaling. This allows long-distance communication since the range supported by RS232 is normally less than 50 feet while RS485’s range can exceed 1000 feet. The design features an RS232 transceiver, an RS485 transceiver, a multivibrator, and a digital isolator with integrated power to implement bidirectional half-duplex communication without any software interference. The board has been tested for up to 800 feet in length with a two-wire twisted pair cable. Up to 115200 baud rate communication between two PCs via serial port has been successful. The design features the industrial standard IEC 61000-4-2 and 61000-4-4 protection with 5000 Vrms isolation protection.
Circuit Courtesy: Texas Instruments Reference Design
Key Features
- Operating power supply 3.3V and 5V
- Single Supply Operation
- Convert RS232 to RS485 signaling for bidirectional half-duplex communication
- Without any Software Interference
- Industrial-level ESD Protection
- Isolation: 5000 Vrms Isolation Protection.
- Extend System Topology from Point-to-Point to Multi Drop
- Cable Length up to 1000 Feet
- Hot Plug-in Feature
- 4 x 3 mm Mounting Holes
- PCB Dimensions 62.56 x 31.99 mm
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