The parent coil of the relay in the attached drawing has a pinlist with 3 form-C contacts. The drawing also contain one NO & one NC children contacts associated with the parent coil (CR1). When the toggle command is used on any of the child contacts, the terminal number changes to another set of contact numbers.
For example, use the toggle command on the NO contact with pins 1&3. The child should change to a NC contact with pins 1&4, but instead changes to pins 11&8 (the pins of the last unused contact).
Now if the toggle command is used on the original NC contact with pins 6&5, the child is changed to a NO contact with pins of the original NO contact (because the is now the unused contact).
If another child contact is inserted into the drawing and is associated with the parent, it will take the pins of the last unused contact. Now, if the toggle command is used on any of the contacts, the symbol will change but the pin numbers will disappear because there are no more available contacts.
The toggle command should keep the common pin the same and only change the NO to NC, or vise versa, not change the pin numbers to a totally different set of contacts.
Regards,
Hyun Kim
Powell Electrical Mfg. Co.