2 Ports Serial Multifunctional Server

2 Ports Serial Multifunctional Server
2 Ports Serial Multifunctional Server
2 Ports Serial Multifunctional Server
2 Ports Serial Multifunctional Server
2 Ports Serial Multifunctional Server
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SERIALLINK SLK-S502 series serial port server converts multi-channel decentralized, low-speed, and different standard serial devices into Ethernet for centralized management. After installing the virtual serial port, it can realize the remote reading of serial data.SLK-S502 series serial server supports multiple working modes, including TCP server mode, TCP client mode, UDP mode, TCP/UDP Socket, Modbus RTU to Modbus TCP Server and other working modes,allow user software to access serial devices via TCP plus port number. In addition, it also supports virtual serial port access to serial devices. SERIALLINK SLK-S502 supports convenient and quick manual configuration of the IP address through a browser or Telnet terminal. At the same time, users can also use the easy-to-use Windows management software to automatically search for serial server devices in the LAN, and perform applications such as remote configuration management and working status monitoring.


2 x Adaptive 10/100/1000M Ethernet

1 x R232 serial port (interface is RJ45)

1 x RS485 serial port (interface as terminal)

4 x Digital DI input

1 x Digital quantity DO output, relay output

RS485 serial port with TVS, ESD protection

RS232 serial port with ESD protection

Multiple working modes: TCP server, UDP working mode, TCP client mode, Modbus RTU to Modbus TCP Server mode

Support WEB and Telnet two configuration methods

Wide voltage: DC9-28V power supply






SLK-S502 Series


Dual-Core 880MHZ 


1Gb DDR3 RAM default, can be customized to support 4Gb DDR3 RAM maximum 

NAND Flash

128Mbytes default 

Ethernet interface

Number of interfaces:2 

speed10/100 /1000Mbps, auto MDI/MDIX

Connector:8-pin RJ45

protect 2.4 kV built-in


Serial port

Number of serial ports:2,1 x RS232,1 x RS485

The first channel is the RS232 serial port (RJ45) definition

Note: RXD, TXD, GND are connected with the previous terminal definitions to facilitate terminal wiring)

The second serial port RS485-definition

RS-485-2w: A,B

Serial parameter

Data bit: 5, 6, 7, 8

Stop bits: 1, 1.5, 2

Check Digit: None, Even, Odd

Baud rate: 300bps to 115200 kbps

Serial port protection

RS232/485 with 15 kV ESD protection

RS232/485 with TVS protection

RS-485Terminal resistance: 120 Ω

Software performance

Network protocol: TCP, UDP, DHCP ,DNS

Configuration method: Web configuration

Working mode: TCP Server, TCP client, UDP, Modbus RTU to Modbus TCP Server

Windows 95/98/ME/NT/2000, Windows

XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows 2008 R2/2012/2012 R2 (x64)

Use the IP address and port number to access the serial port under LINUX

Physical parameter

Material: iron

Dimensions with mounting accessories 86mm x 70mm x 25mm


Operating temperature: -40 to 75°C (-40 to 167°F)

storage temperature: -40 to 85°C (-40 to 167°F)

Relative humidity: 5 to 95%

Power supply

Input voltage: DC9-28V


2 year


Dual-Core 880MHZ

Order information


Ordered model



2-port serial server

1 RS232 serial port and 1 RSR485 serial port

2 10/100/1000M Ethernet ports

Road 4 di, road 2 DO

DC9-28V power supply



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