Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_70 (synchronisation VARCHAR, fieldbus VARCHAR)
### Question:
What is the synchronisation for the controlnet fieldbus?
### Answer:
SELECT synchronisation FROM table_name_70 WHERE fieldbus = "controlnet"