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COM

Serial Port Specifications

COM1 & COM2 support RS485 protocol; COM3 & COM4 support RS232 protocol. Serial ports operate exclusively on the real-time side and do not support virtualization.

RS485 Communication

RS485 Interface Definition
Pinout for RS485 Communication Ports

Connector Signal Name Connector Signal Name
1B RS485- (COM1) 2B RS485- (COM2)
1A RS485+ (COM1) 2A RS485+ (COM2)
G GND (COM1) G GND (COM2)
3B RS485- (COM3) 4B RS485- (COM4)
3A RS485+ (COM3) 4A RS485+ (COM4)
G GND (COM3) G GND (COM4)

RS485 Technical Specifications

Parameter Specification
Channels 4
Baud Rate 4.8K, 9.6K, 19.2K, 38.4K, 57.6K, 115.2K bps
Max. Slave Nodes 31
Supported Protocols Modbus RTU, Free Protocol
Isolation Isolated

RS232 Communication

RS232 Interface Definition
Pinout for RS232 Communication Ports

Connector Signal Name Connector Signal Name
5T TXD (COM5) 6T TXD (COM6)
5R RXD (COM5) 6R RXD (COM6)
G GND (COM5) G GND (COM6)

RS232 Technical Specifications

Parameter Specification
Channels 2
Baud Rate 4.8K, 9.6K, 19.2K, 38.4K, 57.6K, 115.2K bps
Max. Slave Nodes 1
Supported Protocols Modbus RTU, Free Protocol
Isolation Isolated
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Last modified: 2025-06-16