2.5 Connection Structure
To define the position of the pin relative to the device, you have to specify the following properties:
· Position X (Dimension)
is the distance in direction X from the pin to the reference axis Center-Left.
· Position Y (Dimension)
If you enter data here, then the way the Y position is determined depends on the existence and filling of the attribute Reference Point.
· Reference Point exists and has been filled: the Y position will be determined starting from the Top/Left or Bottom/Left edge of the shape.
· Reference Point not existing or not filled: the Y position will be determined as follows:
– With wiring direction north: starting from the upper edge of the shape.
- With wiring direction south: starting from the lower edge of the shape.
· Position Z (Dimension)
is the distance in direction Z from the pin to the base of the device.
· Wiring Direction
The wiring direction determines from what direction a wire has to be connected with a pin.
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Wiring Direction |
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North |
Wire feed from above, with default representation of the device. If the device is rotated by 90°, the wire is supplied from the left (West). |
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South |
Wire feed from below, with default representation of the device. If the device is rotated by 90°, the wire is supplied from the right (East). |
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West |
Wire feed from left, with default representation of the device. The attribute Reference Point has to be filled to allow for a correct determination of the wire length. |
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East |
Wire feed from right, with default representation of the device. The attribute Reference Point has to be filled to allow for a correct determination of the wire length. |
If the wire direction is changed, then the attribute Reference Point should be filled under all circumstances, to guarantee a correct determination of the length.
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Input is expected in the form of system dictionary texts. If the texts have been entered by hand, then the routing assistant will not recognize them. Use the assistant Select Value, to predefine the values. |
· Reference Point
Defines the reference point for the wiring.
Possible input is Top/Left and Bottom/Left.
If the attribute Reference Point is used, then the wiring direction may be changed without altering the geographical position of the pin in the model
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Input is expected in the form of system dictionary texts. If the texts have been entered by hand, then the routing assistant will not recognize them. Use the assistant Select Value, to predefine the values. |
The attribute Reference Point of the pins may be altered in the catalog using a worksheet of all pins. For that purpose, select all pins with wiring direction North and assign to all pins in column Reference Point the value Top/Left (Drag-Down). Proceed alike with the pins with wiring direction South by assigning to the column Reference Point the value Bottom/Left.
· If no values are added to the coordinates of the pin, the middle of the device symbol, at the outer contour, is used as default pin position. The specified wire direction is considered.
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If no wire direction is specified at the pin, the predefined rules in the project properties are used.
