IEC501A {M dev,ser [,labtyp] [,den],jjj,sss [,dsname] [,mediatype][,no worm] | M dev,ser [,labtyp] [,trtch],jjj,sss [,dsname] [,mediatype][,no worm]}
Explanation
Please refer to the explanation in message IEC501E Explanation
Routing code
3,5/4,6
Descriptor code
2