There are many cases where it is necessary to equip the ports of an interface card with different port models. It may for example be necessary to use COM1 as a 20mA programming interface for a PLC, as the software used only supports this port, while COM2 is connected to an RS232 terminal device.

For such requirements, W&T provides a very smart solution without any need for additional external hardware. The module concept of the serial W&T PC cards allow you to freely select the interface model, as the PC card mainboard is equipped with pluggable modules that convert the internal TTL signals into interface signals.

The combined interface cards are supplied fully configured according to your specifications and are ready for installation. You can change a built-in port at any time by simply replacing the interface module.

Connections and displays:

• System bus:
  • 16 Bit ISA-Bus / 8.33MHz
• Serial port:
  • 2x slots for interface modules
  • 12-pin header connector with 2mm spacing
• Operating modes:
  • Different interface types possible
• Maximum baud rate:
  • 115.200 kbaud
• Data format:
  • any format
• Signals:
  • RxD,TxD,RTS,CTS,DSR,DCD,DTR,RI
• Handshake:
  • No, RTS/CTS, Xon/Xoff
• UART:
  • 16550 with FIFO
• Base addresses:
  • 03F8H, 02F8H, 03E8H, 02E8H
• Interrupts:
  • IRQ 3..7, IRQ 9..12
• Galvanic isolation:
  • Isolation voltage min. 1kV DC
  • between PC and serial ports
• Supply voltage:
  • 5V DC, 12V DC
• Current consumption:
  • Varies with the serial module used

Housing and other data:

• Dimensions:
  • 145 x 120mm (W x H)
• Enclosure rating:
  • IP00
• Weight:
  • approx. 90g
• Ambient temperature:
  • Storage: -40..+70°C
  • Operating: 0..+70°C
• Permissible relative humidity:
  • 5..95% RH, non-condensing
• Scope of delivery:
  • serial ISA mainboard
  • Manual