* M Stanley will meet $500 mln cost-cut goal in 2012 -CEO

* Merging data centers, wealth management units to save money

* Any Moody's rating cut will be "manageable" - Gorman

June 12 (Reuters) - Morgan Stanley is "maniacally focused" on cutting costs apart from compensation and is on track to reduce expenses by $500 million this year, Chief Executive James Gorman said on Tuesday.

Gorman, speaking at a conference in New York, also reiterated Morgan Stanley's plans to reduce costs by $1.4 billion annually over the long term.

"We are maniacally focused on non-comp expenses," said Gorman.

He said the investment bank would achieve those cost-cutting goals in part by merging data centers and merging wealth-management offices, which would reduce real-estate and other non-compensation costs.

The bank is also monitoring the size of its overall payroll for possible job cuts as revenue remains under pressure from a weak market environment, he said.

"We are very, very focused on that, obviously, in this environment," said Gorman.

Morgan Stanley cut 2,925 jobs between the first quarter of 2011 and the first quarter of this year.

Gorman's presentation focused mostly on how Morgan Stanley has changed its risk profile in the years since the financial crisis, and came as Wall Street awaits word from Moody's Corp about rating downgrades of global investment banks. Morgan Stanley is at risk of a ratings cut of up to three notches, which would leave the company at Baa2, just two steps above "junk" status.

Any of the threatened ratings cuts would result in a "manageable outcome," Gorman said. What matters is how market perception changes after the downgrade occurs, which may be affected by how much Morgan Stanley's rating is lowered relative to its peers, he said.

"We're not panicked over this but we're prepared for it and we'll make whatever business adjustments are necessary once we get there," said Gorman.