The PCL-746 + the port RS-232/RS-422/RS-485 communication card automatic data flow control in the Main Features RS-485 mode, four independent RS-232/422/485 serial port transfer rate of up to 115.2 Kbps interrupt (jumper selectable): 3, 4, 5, 7, 9, 10, 11, 12 or 15 support higher data throughput Interrupt Status Register Data Sheet (PDF) the technology Download Products PCL-746 + a 4-port serial communications card. The main features of the card and each port can be individually by jumpers on the card is set to RS-232, RS-422 or RS-485. PCL-746 + 16C 550UART, enhance the ability to interrupt handling in 115.2KBPS transmission rate can still be safe and reliable. PCL-746 + supports two kinds of operating modes: standard mode and enhanced mode. In standard mode, the four ports can be set to your own address or IRQ channel; enhanced mode, all four ports share an IRQ. When the card generates an interrupt, the interrupt status register indicates the interrupt from which port. Shared interrupts can be set to the most commonly used (extended) AT interrupts. Can simplify programming, speed up interrupt handling and interrupt resources vacated for other devices. Specifications PCL-746 + / 9-BE PCL-746 +-BE communicationInterfaces CAN - Current Loop - RS-232 VV RS-422 VV RS-485 VV Display Ports 4 4 Network Cable Connector Type DB9 Male DB25 Male Protection Isolation - - Surge - Ordering Information Product Description PCL-746 + / 9-BE 4-port RS-232/422/485 ISA COMM card w/DB9 PCL-746 +-BE 4-port RS-232/422/485 ISA COMM card w/DB25