Siemens 6ES7647-0BA00-0YA2 - Page 67

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