Refer:
click hereIntroduced as an intercity express between Bangalore and Coimbatore from 1st August 1997. From 1st July 2008, it was extended to Ernakulam.
Interestingly, according to the Lok Sabha debates, this train replaced a Bangalore-Coimbatore Shatabdi express that was running initially as a weekly and later as a tri-weekly. Apparently the Shatabdi was started in early 1997, but was replaced by the intercity within a few months of its inauguration.