Lava Computer RS550 installation manual RS-422 Configuration, Serial Configuration

RS-422 Configuration

Serial Configuration

1.Determine the number of serial ports installed in your system. Each serial port will have an unique "COM" designation. Configure the ports of the RS422-550 for two unused COM addresses.

2.Determine which IRQs (interrupts) are free in your system. Configure each serial port on the RS422-550 for an unused IRQ. Although some devices allow sharing of IRQs, this is not recommended. If you are using Windows and are unsure which IRQs are available in your PC, open Control Panel, System, Device Manager, and double-click on Computer. This will list the IRQs that are used. Select two unused IRQs for the 2 ports on the RS422-550.

3a. For Serial 1, install the jumper above the number corresponding to the desired IRQ, so that it covers the pin in the bottom row and the pin in the middle row.

3b. For Serial 2, install the jumper above the number corresponding to the desired IRQ, so that it covers the pin in the top row and the pin in the middle row.

Do not install more than one IRQ jumper per serial port.

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