MSB-118

8-port 232/422/485 Universal PCI Board

Introduction

The MSB-118 is a high performance 8-port RS-232/422/485 universal serial board. Each port of the MSB-118 can be independently configured as RS-232, RS-422 or RS-485 serial Interface by adjusting the on-board DIP switch.

16C950 Compatible High Speed UART

A high-performance 16C950 compatible UART chip with 128-byte FIFO is used for MSB-118 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.

Universal PCI Bus Compatible

The MSB-118 is an universal PCI board which means the board can be plugged into PCs with 5V 32-bit PCI slots or PCs with 3.3V 32-bit PCI slots.


Pin Assignment

PINRS-232RS-422RS-485
1DCDTx----
2Rx Tx+---
3Tx Rx+Data+
4DTRRx-Data-
5GNDGNDGND
6DSRRTS----
7RTSRTS+---
8CTSCTS+---
9RICTS----

Specifications

Hardware

Serial Port Parameters

Connection Cable (CBL-M68M9x8-100)

Drivers

General

Software Utility




Switch Setting

Any individual port of the MSB-118 can operate as either RS-232, RS-422 or RS-485. The DIP switches SW1, SW2, SW3 and SW4 are used together to select the desired interface. Please be noted that port 1 is associated to DIP switch position_1, port 2 is associated to DIP switch position_2, and so on.


RS-232/422/485 Interface Selection
TypeRS-232RS-422RS-485
SW1ONOFFOFF
SW2OFFOFFON
SW3OFFOFFON
SW4OFFOFFON

Ordering Information

MSB-118

8-port RS-232/422/485 Universal PCI Board with one 1-to-8 connection cable (CBL-M68M9x8-100)

CBL-M68M9x8-100

1-to-8 connection cable, 100cm (SCSI3 male for host side, DB9 male for device side)