Maximum frequency of order modification allowed?

[MarkSanDiego]

In Tradestation automation, there is a limit of how frequently orders on their servers can be updated. In most cases, an update (change in stop level or limit level) can only occur once for each minute bar.

Is there any such similar limitation with automating systems with Ninja Trader and Interactive Brokers?

If the strategy makes frequent updates or changes to the order on IB servers, are there additional commission charges?

[NinjaTrader_Ray]

I can answer the technical part of the question which is that there is no limitation on frequency. We have run regression tests that made 40+ changes per second. Keep in mind, changes are internally queued and only submitted to the broker once the prior change has reached a status where we cen send the next change etc...

On the commission, you need to ask IB.