Queries :: Extract Max Date And Time - How To Get Corresponding ID

I have a (simplified) table with

ID | Date | Time | machine | value
304 1-1-2014 06:00 115 0.54%
305 1-1-2014 06:00 111 0.56%
306 1-1-2014 07:00 111 0.52%
307 1-1-2014 07:00 115 0.53%
308 2-1-2014 07:00 111 0.56%
309 2-1-2014 07:00 115 0.58%
310 2-1-2014 06:00 111 0.54%
311 2-1-2014 08:00 115 0.53%

I try to find the ID corresponding to the maximum date+time grouped by Machine.
In this case I would like to find 311 (maximum date/time for machine 115) and 308 (maximum date/time for machine 111)

The way to extract the maximum date + time is not difficult

SELECT Max([Date]+[time]) AS datevalue, tbl_TexControl.Machine
FROM tbl_TexControl
GROUP BY tbl_TexControl.Machine;

But how do I get the corresponding ID? Not with Max([ID]) because then ID 310 is selected which is not the maximum of the time.