RxD
SELV
UEFI
UL
USB
SIMATIC IOT2050
Operating Instructions, 03/2020, A5E39456816-AA
Receive Data
Safety Extra Low Voltage
Unified Extensible Firmware In-
terface
Underwriters Laboratories Inc.
Universal Serial Bus
Data transfer signal
Safety extra low voltage
US organization for testing and certification ac-
cording to national or binational standards.
List of abbreviations
67