Yes, you can post something like the following XML if you want ALL the DIMMs regardless of what blade they are on:
1<configResolveClass cookie="1317220833/e3b0a156-df30-4066-9145-d7be9dc01237" inHierarchical="false" classId="memoryUnit"/>
You can be more specific and file to a particular chassis and/or blade with a wildcard filter
1<configResolveClass cookie="1317220833/e3b0a156-df30-4066-9145-d7be9dc01237" inHierarchical="false" classId="memoryUnit"><inFilter><wcard class="memoryUnit" property="dn" value="chassis-1/blade-5" /></inFilter> </configResolveClass>