Titan/cPCI User’s Manual, Connect Tech Inc.

Configuring the Titan/cPCI

Compact Peripheral Component Interconnect (cPCI) bus architecture offers a feature called Plug and Play (sometimes referred to as PnP). This feature automatically identifies and configures installed devices each time the system boots.

In most CompactPCI compliant computers, the system BIOS will automatically detect and configure the Titan/cPCI adapter. However in some cases a system BIOS cannot resolve all of the requests for resources in the system. This often occurs with the assignment of system interrupts, since this is usually the scarcest resource.

If this occurs, the driver will signal that a given resource has not been assigned, which requires the user to assign system resources manually. After reboot, determine with the BIOS setup utility what resources have been assigned to the cPCI devices and then do manual assignments of free resources to your cPCI device. Reboot your system. If the BIOS cannot find a suitable configuration please contact Connect Tech Technical Support.

Important Configuration Note:

The Titan/cPCI and the Titan/cPCI with front LEDs must be configured for RS-485 to operate with the Titan Rear I/O Opto. This is configured via jumper blocks on the Rear I/O Opto. You must remove ALL jumpers on the front I/O Titan/cPCI when you are using the Rear I/O Opto.

Baud Rate Selection

Titan/cPCI adapters offer ideal solutions for applications requiring serial communications up to 1.8432 Mbps. Baud rates are software selectable; please refer to Software Installation for configuring the baud rates under certain operating systems.

RS-422/485 Line Interface

The Titan/cPCI adapters and Rear I/O Opto adapters come with a jumper selectable RS-422/485 electrical line interface for each port. The RS-422/485 electrical interface is a reliable high- speed serial link that offers superior noise immunity and multi-drop network connectivity. The RS-485 electrical interface is also a superset of the RS-422 electrical interface. Titan/cPCI and Titan/cPCI Rear I/O Opto adapters offer full RS-422/485 support in hardware. The following modes are supported:

Full Duplex Mode

In this mode, TxD & RxD are active all the time. This mode is typically used in point to point situations much like RS-232. Please refer to Appendix D: RS-422/485 Line Interface for the jumper settings associated with this function.

Half Duplex Mode

In this mode the TxD line driver is enabled only when data is transmitted and RxD is disabled when data is being transmitted. This mode is typically used in either point to point "2 wire" connections OR in multi-drop "2 wire" bussed connections. Please refer to Appendix D: RS-422/485 Line Interface for the jumper settings associated with this function.

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