104-ICOM-2S - 2-канальный PC/104-контроллер оптоизолированных COM-портов RS-422/485 (до 460.8 Kbit, -40~+85)

Недоступно для заказа

104-ICOM-2S & 104-COM-2S

FEATURES

2 independent optically-isolated asynchronous serial COM ports
Field-selectable RS-422 and RS-485 for each port
Auto-RTS feature makes half-duplex RS-485 communications effortless
Fixed bias and jumper selectable termination provided on each transmit and receive channel simplifies cabling
Speeds up to 115.2K
Operates as a standard COM port in all operating systems

FACTORY OPTIONS

16850 UARTS with 128-byte FIFO
Speeds up to 460.8K
0 to 60°C and -40 to +85°C versions available
Non-isolated version available

FUNCTIONAL DESCRIPTION

The Model 104-ICOM-2S is a rugged, low cost dual-port PC/104 serial communication board featuring 60V optical isolation. The 104-COM-2S is the non-isolated version. Optically isolating the serial data lines from each other, and from the computer, assures smooth, error-free data transmission even in noisy, real-world environments. The two serial ports are based on the 16C550 UART with a 16 byte FIFO, useful for high-speed communications and in any operating system. The ports are available via two DB9 Male connectors with jack screws to eliminate vibration worries in harsh environments and applications.
Each port’s protocol (RS-422 or RS-485) is selected by jumpers on the board. Two- and four-wire communications are possible including four-wire RS-485 communication. Bias is provided as a standard on the transmit and receive lines, whereas termination is jumper selected, which can simplify system architecture by eliminating some of the need to install resistors in the field cabling system.

Ordering Information

Part# Description
Unit
104-ICOM-2S 2 port isolated RS422/485
104-COM-2S 2 port RS422/485 board (non-isolated)