Lekuo 4 Port RS485 RS422 Mini PCIe Serial Card for Embedded Systems

Model

IO-MPCE354A-4S

Chipset

EXAR 17V354

Interface

Mini PCIe

Serial Ports

4 x RS422/485 ports

Supported Signals

RS485: DATA+ (B), DATA- (A), GND; RS422: T/R+, T/R-, RXD+, RXD-, GND

Baud Rate

Up to 921.6Kbps

Transmission Distance

Up to 1.2km (300bps–921600bps)

Flow Control

None, Hardware, XON/XOFF

Direction Control

Automatic data-flow and transmission direction detection

Operating Mode

Asynchronous, Point-to-Point, Point-to-Multipoint (2-wire half-duplex, 4-wire full-duplex)

Protection

600W surge protection, 15kV ESD protection (all ports)

Sleep Mode

Supported with wake-up indicator

Transmission Media

Twisted-pair or shielded cable

UART Support

7 or 8 data bits, 1 or 2 stop bits, parity: even/odd/mark/space/none

Load Capability

Up to 32 RS422/RS485 devices

Product Size

50 x 30mm

Operating Temperature

-40°C to 85°C

System Compatibility

Windows XP/7/8, Windows Server 2003/2008/2012, Linux 2.6.27 and newer

Motherboard Slot

Mini PCIe

Features
• Accord Full-Mini (F1) Card type slot size;
• Accord PCI-E Mini Card electrical specification Revision 1.2;
• RS485 signals: DATA+ (B), DATA- (A), GND
• RS422 signal: T/R+, T/R-, RXD+, RXD-, GND
• 600W surge protection, 15 KV ESD protection for all serial ports
• Working mode: asynchronous working、point-to-point or point-to-multipoint 2 wires (half duplex) 4 wires (full duplex)
• Transmission distance: RS-485/422 port:1.2km (300bps-921600bps)
• Sleep mode with wake-up Indicator
• Transmission media: twisted-pair cable or shielded cable
• Interface protection:600W surge protection, 15 kV ESD protection for all serial ports;
• Direction control: Adopt the technology which automatically controls the data-flow direction、automatically distinguish and control the data-transmission direction;
• UART interface support for 7 or 8 data bits,1 or 2 stop bits and even/odd/mark/space/none
• Flow control none,hardware and xon/xoff
• Load capability; Support point-to-multipoint transmission. Each converter can connect 32 RS-422 or RS-485 interface equipment
• Extended operating temperature range; -40 to 85⁰C

Applications
• Next generation Point-of-Sale Systems
• Remote Access Servers
• Storage Network Management
• Factory Automation and Process Control

System Requirements
• Windows® Server 2003, 2008, 2012
• Windows® XP, Vista, 7, 8
• Linux 2.6.27, 2.6.31, 2.6.32, 3.x.x and newer
• A available mini PCI Express slot

Related Downloads

Driver Download

1. IO-MPCE354A-4S pdf

Download

❓ Does this card support the Kylin system?

✅ It supports Kylin, UnionTech and other Linux systems for use.

❓ Does this card require the installation of drivers? Can it be used with the Win7 system?

✅ Yes, it can be used after installing the drivers. The method for installing Windows drivers can be found in the detail page introduction.

❓ Can Linux systems use it without drivers?

✅ The RS232 serial card supports using the system's built-in kernel drivers, so it can be used without installing drivers. However, RS422/RS485 serial cards with PCI_E and miniPCE interfaces require the installation of drivers for use.

❓How to simply test if the serial port is working and communicating?

❓ How to install drivers on Linux systems? Are there any tutorials?

✅http://www.mmui.com.cn/index.php?id=1782

❓ What is the interface definition of this serial card?

✅ The pin definitions for RS422 are as follows:

1—RXD-

2—TXD+

3—RXD+

4—TXD-

5—GND

6—Empty (VCC is not used in this product)

The pin definitions for RS485 are as follows:

1—Empty

2—TX/RXD+(A)

3—Empty

4—TX/RXD-(B)

5—GND

6—Empty

❓ How can I download the drivers? Which drivers are used? I can't find them on the official website.

✅ Search for our official website's driver download address on Baidu: http://www.mmui.com.cn/data/upload/image/EXAR352_354_358.zip. Scroll down to find EXAR/352/354/358 and download and install it.