So to be clear, if you set the Meridian Limit West to '05.00.00' and '-175.00.00'; then the East settings to '-05.00.00' and '175.00.00', then the mount will happily track 5 degrees either side of the Meridian before stopping. You need both sets of numbers (I believe) to take account of situations when the mount is pointing Northwards and Southwards.
If you set the Track Past to (say) 1 degree (as I say I'm travelling so cant check, but this may actually be minutes of time not degrees) the mount will actually go a bit beyond these limits before stopping. This is handy because it would eba nnoying to hit the limits 19 minutes in to a 20 minute sub. You can change these numbers on the fly.
You could use the Mesu handset to slew to a position that is safe and the read off the information from the Sitech pop up window. This would give you an idea.