Siemens SIMATIC MOBY D System Manual page 342

List of abbreviations
VDE
Verband Deutscher Elektrotechniker [Association of German Electrical Engineers]
RFID
Radio Frequency Identification Devices
UL
Underwriter Laboratories, USA
CSA
Canadian Standard Association
EMC
Electromagnetic compatibility
FB
Function block
FC
Function
Sa
Operating distance between MDS and SLG
Sg
Limit distance
L
Length of a transmission window
CP
Intersection of the axes of symmetry of the MDS
UID
Unique Identification. A serial number which identifies the transponder uniquely.
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System Manual, 01/2010, J31069-D0147-A6-7618
MOBY D