Devices

Combining Normal Devices in a Slot

Sometimes logical schematics contain two or more devices that could be the same device (that is, a shared device). For example, you may have drawn two systems that each contain a fuse. The systems could use exactly the same fuse if they are fed from the same fuse box but this is not known until the fuses are placed in the topological design. Capital Systems Integrator allows you to combine devices that you have placed in the same slot and thereby merge signals from identical pins.

Devices with footprints cannot be combined with any other devices.

Procedure

Hold down the SHIFT key on your keyboard and click the devices to be combined in the Design Browser (Design tab). Still holding down the SHIFT key, right-click one of the selected devices and choose Combine Devices.
The Combine Devices Dialog Box displays. Specify the Name that you want the combined device to have.
Use the Pin Map to map the signals that terminate at the uncombined device pins to the pins of the combined device. The table displays the following information for each signal that terminates at the devices to be combined:Device The uncombined device at which the signal terminates.

Pin The pin on the uncombined device at which the signal terminates.

Signal The name of the signal.

Combined The pin on the new combined device at which the signal terminates.

Click the OK button to combine the devices.

Results

The system automatically merges signals that terminate at pins with the same name on the devices to be combined. See the Example of Signal Merging in the Examples section below in this topic. Caution The system combines pins from the combined devices. However, the combined pins remain mapped to all of the originally mapped cavities because the system does not know which cavities to choose. You must edit the mappings manually. See Example of Cavity Mapping Cleanup in the Examples section below in this topic.
The option expression on the combined device is the logical OR of the option expressions on the constituent logical devices. Also, the device is considered to be variantly placed using the logical OR option expression of the constituent placement option expressions. Note If at least one of the devices has no option expression or variant placement, the resulting combined device is considered to have no option expression or variant placement.

Examples

Example

of Signal Merging

A signal COND01 terminates at PIN1 on a device A1 and a signal COND02 terminates at PIN1 on a device A2. The devices A1 and A2 are being combined in a slot. COND01 and COND02 are merged together to terminate at a pin PIN1 on the new combined device because they both terminate at a pin called PIN1 on the original devices.

If you want to change the pin at which a signal terminates on the combined device, click the pin name in this column and select a different one from the drop-down list.

If you choose New Pin from the drop-down list, a new pin is created with a unique name following on from the existing pin names. For example: If the combined device currently has 6 pins, named 1 to 6, the new pin is called 7.

Note

When you combine devices, multiple pins are mapped to a single slot device pin. If these pins each have a Pin Group attribute, one of the values from the combined pins is used.

Example

of Cavity Mapping Cleanup

When a device is placed in a slot, the system maps the pins to connector cavities. For example, when you place two fuses into a slot, there are four device pins mapped to four connector cavities. When you combine devices in a slot, the system also combines their pins. This means, when the two fuses are combined, the original four pins reduce to two pins. Although it may seem clear that the combined fuse should map to two cavities, the system does not know which of the original four cavities to use. Therefore, the two combined fuse pins are left mapped to the same original four cavities. If this is not the intention, you must manually remap the two combined fuse pins to the two required connector cavities.

The following is an example of two 2-pin devices (such as fuses) placed in a slot.

Figure 31: Two 2-Pin Devices Placed in Slot

You combine the two devices, and accept the default mapping.

You then view the signal map and manually map the pins to the correct connector cavities using the pull down menu in the cavity column.

Figure 32: Manually Mapping Combined Pins to Cavities

After manually mapping cavities 3 and 4 to pins 1 and 2, the signal map looks as follows.

Figure 33: Correct Mappings of Combined Pins

Parent Topic:

Devices