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Mini-PCI 4-port RS-232/422/485 Module US$105.00

MSM-4S
Mini-PCI 4-port RS-232/422/485 Module


The MSM-4S is a high performance 4-port industrial serial communication Mini-PCI module. Port P1 and P2 can be independently configured as RS-232, RS-422 or RS-485 serial Interface by adjusting the on-board DIP switch. Port P3 and P4 are dedicated RS-232 serial interface. Four D-Sub 9-pin to 2x5 IDC ribbon cables are included for connecting to the board's serial port headers.

  • Mini-PCI interface, 50 mm height only
  • 2x RS-232/422/485 ports, select by DIP switch
  • 2x dedicated RS-232 ports
  • Baud rate from 50bps to 921.6Kbps
  • 16C950 compatible UART with 128-byte FIFO
  • Over 700Kbps data throughput for each port running concurrently
  • Hardware auto-direction control for RS-485
  • Software drivers included for Windows 2003/XP/2000/NT/98/95/ME and Linux

16C950 Compatible High Speed UART

A high-performance 16C950 compatible UART chip with 128-byte FIFO is used for MSM-4S to improve the transmission throughput and reduce the host computer's CPU loading. Over 700Kbps data throughput for each port is guaranteed when all ports run concurrently.

4-port RS-232/422/485 Module Specifications

Hardware

  • Bus: Mini-PCI
  • IRQ: one IRQ for all serial ports
  • No. of Boards: 4 max. (share the same IRQ)
  • UART: Oxford 16mPCI954 or compatible
  • Connector: 10-pin header for each serial port
  • Protection: 15KV ESD for all signals

Serial Port Setting

  • P1: RS-232/422/485, select by DIP SW S1,S2
  • P2: RS-232/422/485, select by DIP SW S3,S4
  • P3,P4: RS-232 only

Serial Port Parameters

  • Baud Rate: 50bps to 921.6 Kbps
  • Parity: None, Even, Odd, Mark, Space
  • Data Bits: 5,6,7,8 bits
  • Stop Bit: 1, 1.5, 2 bits
  • Flow Control: RTS/CTS, XON/XOFF, None
  • Hardware auto-direction control for RS-485

Drivers

  • Windows 2003/XP/2000/NT/98/95/ME
  • Linux 2.4.12 and above

General

  • Power consumption: 200mA@3.3VDC
  • Dimension: 59 x 50 mm
  • Operation Temperature: 0~55C(32~131F),5~95% RH
  • Storage Temperature: -20~85C,5~95% RH
  • Regulation: CE/FCC Class A compliant
  • Warranty: 2 years

Pin Assignment

PIN RS-232 RS-422 RS-485
1 DCD Tx- ---
2 DSR --- ---
3 Rx Tx+ ---
4 RTS --- ---
5 Tx Rx+ Data+
6 CTS --- ---
7 DTR Rx- Data-
8 RI --- ---
9 GND GND GND
10 --- --- ---

Software Utility

Switch Setting

The MSM-4S's port P1 and P2 can operate as either RS-232, RS-422 or RS-485. The DIP switch S1 and S2 are used together to adjust the port P1; the S3 and S4 are used for the port P2.

DIP Switch S1 and S3

Type 1 2 3 4 5 6
RS-232 ON OFF OFF ON OFF ON
RS-422 OFF ON OFF OFF ON OFF
RS-485 OFF ON ON OFF ON OFF

DIP Switch S2 and S4

Type 1 2 3 4 5 6
RS-232 OFF ON OFF ON OFF ON
RS-422 ON OFF ON OFF ON OFF
RS-485 ON OFF ON OFF ON OFF


This product was added to our catalog on Monday 14 July, 2008.

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