List of abbreviations
B.1 Abbreviations
PROFINET Proxy SPP2000
84
Equipment Manual, 03/2022, L1V30814715D-01
Abbreviation
Meaning
NAFTA
North American Free Trade Agreement
NEMA
National Electrical Manufacturers Association
PAC
Power Analysis & Control
PMD
Power Monitoring Device
PI
PROFIBUS user organization
PTCP
Precision Transparent Clock Protocol
RALRM
Read alarm
RDREC
Read record
RET_VAL
Return value: "Return value"
RMS
Root Mean Square RMS
RJ
Registered Jack
RS
Formerly: Radio Selector; now usually: Recommended Standard
RT
Real Time
SELV
Safety Extra Low Voltage
SFB
System function block
SFC
System function
TIA
Totally Integrated Automation
THD
Total Harmonic Distortion Total Harmonic Distortion
THD-R
Relative THD
UL
Underwriters Laboratories Inc.
VDE
Association of Electrical Engineering, Electronics and Information Technology
(Germany)
RLO
Result of logic operation
WRREC
Write record
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