You have given electric loco for your imaginary train from Dindigul to Purulia but chosen straight line from Takkolam to Arakkonam which is unelectrified. Trains with electric loco can run only on detour line between Takkolam and Arakkonam which is shown in attached screenshot. So you have to divert your imaginary train via Melpakkam cabin so that it can run with electric loco. After diversion you have to chose one of the below options:
⏺️Skip Arakkonam and proceed towards Arakkonam North after Melpakkam cabin
Or
⏺️Halt...
more... at Arakkonam, do LR and then proceed towards Arakkonam North