Siemens MicroSAM, Operating Instructions Manual, Page: 127 / 138

Glossary
MicroSAM
Operating Instructions, 06/2012, C79000-G5376-C560-07
125
Abbreviation/symbol Description
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronics Engineers
IP Internet Protocol
ISO International Standards Organization (from Greek: "isos": "equal")
kPa Kilopascal
kg Kilogram
l Liter
LED Light emitting diode
m Meter
m
3
Cubic meter
max. Maximum
MB = Mbit 10
6
bits
MEMS Micro electromechanical system
MHz Megahertz
min Minute
ml Milliliter
MMI Man-Machine Interface
MPa Megapascal
MTBF Mean operating Time Between Failures
MTTR Mean Time To Recover
MV Solenoid valve
N
2
N
2
= nitrogen
NAU Network Access Unit
NEMA National Electrical Manufacturers Association
PC Personal Computer, a stationary single-user computer
Porabond Q Name of a type of column
ppm parts per million (≙ 10
-6
)
PTB Physikalisch-Technische Bundesanstalt (German technical inspectorate)
PWM Pulse width modulation
RAM Random Access Memory
ROM Read Only Memory
RS Recommended Standard
RS -232 (also EIA-232) Identifies an interface standard for a sequential, serial data
transmission
RS-485 (also EIA-485) Identifies an interface standard for a differential, serial data
transmission
RSP Real Time Signal Processing
s Second
Sil5 Name of a type of column