s7 swap bytes in a word

Maybe a stupid question:

Is there a simple way (instruction) to swap the bytes in a word. (S7-300)

So more clever then:

L MB 0
T DB1.DBB0
L MB 1
T MB 0
L DB1.DBB0
T MB 1

I was looking at TAK?

Found it CAW.

No Werner,

TAK is used to swap ACCU1 and ACCU2.

I think you should use CAW in this situation:

L MW0
CAW
T DB1.DBW0