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

Last modified: 2025-06-16