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Advantech pcl-745B dual rs-422 rs-485 isa card
Advantech PCL-745B Dual RS-422 RS-485 ISA CARD
Advantech PCL-745B Dual port RS-422 RS-485 ISA CARD. REV B1 01-2
The PCL-745B card provides two RS-422/485 serial ports. Each port has a 16C550 UART with on-chip 16-byte FIFO buffer for reliable high speed serial I/O. The UART buffers data into 16-byte packets before putting it on the bus. This drastically reduces CPU load and avoids data loss when the system is busy and cannot process the interrupt quickly, especially useful for high speed serial I/O under Windows.
The PCL-745B includes the PC-ComLIB communication software package. The package consists of a configurable DOS driver, a programming library that supports most common languages (such as C, Pascal, Visual Basic, assembly and Clipper) and DataScope. DataScope is a data viewer and terminal emulator with self-diagnostic utilities for easy troubleshooting and debugging.
The RS-485 mode automatically senses the direction of incoming data and switches its transmission direction accordingly. This feature means your network looks and acts just like an RS-232 network. Application software written for half duplex RS-232 can be used without modification. Moreover, you can simply and quickly build an RS-485 network with just two wires.
* PLC monitoring and control
* Serial communication interface for harsh environments
* Remote data acquisition and control systems
* Instrument controller and distributed control systems
* Two independent RS-422/RS-485 serial ports
* Provides 500 VDC isolation (PCL-745B only)
* 16C550 UARTs with on-chip 16-byte FIFO
* Transmission speeds up to 115 Kbps
* I/O address and interrupt selectable
* Wide IRQ selection: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15
* Supports 2 wire or 4 wire operation
* Supports Tx, Rx, RTS, and CTS signals
* Automatic RS-485 data flow control
* Space reserved for termination resistors
* Space reserved for optional surge protection on data lines
* Supports standard DOS COM1, COM2, COM3, and COM4
* Includes PC-ComLIB software
* UART: 2 x 16C550 with 16-byte FIFO
* Signal support: TxD , TxD-, RxD , RxD-, CTS , CTS-, RTS and RTS-
* I/O address: From 200H to 3F8H
* IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12 or 15
* Isolation voltage: 500 VDC (PCL-745B only)
* Power consumption: 5V@400 mA typical, 950 mA max.
* Connectors: Dual DB-9 male connectors
* Operating temperature: 32 to 122 degF (0 to 50 degC)
* Dimensions: 7.3" x 3.9" (185 mm x 100 mm)
