The limit is broker hooked. This is to avoid somebody, employing an EA, to flooding their data server so much so that it slows down their host.Originally Posted by ;
As you see, the broker may just have a couple of host to process your orders. Clients may have as client platform running and flooding the server. This is called Denial of Service (DOS) attack. Do this and the host will not be able to receive the right updated-realtime market price.
I remember a friend getting reprimanded/warned since the broker believed he was doing so when his Trailing Stop EA was quickly changing the SL. Of course the friend wasnt flood the host.
Bottom line, do ask the brokers about it first. You dont want to make win trades only to find out later that the broker will throw this against you personally and forfeit the money.