<< Click to Display Table of Contents >> Navigation:  Drawing Environment > Symbol Insert Tool > Buttons, controls and views > Resource category view > 0-7: Help symbols and contact mirrors > 4 Change-over help contacts

Resource category 4 contains change-over help contacts of different kinds.

 

"Change-over" is the correct term according to the IEC standard. Another popular term for the same thing is "switching".

 

Please note that when contacts are booked towards contact mirrors, different kinds of change-over help contacts are separated. A delayed change-over contact and a conventional change-over contact are for example not considered to be same thing.

 

At delivery, function codes for all common types of change-over help contacts are predefined. Would a need for additional types occur, it is easy to add more.

 

Change-over contacts have a direction and are also asymmetric. Each one of them is therefore available in no less than eight versions, four vertical and four horizontal (up/down, left/right, mirrored/not mirrored).