Siemens SIDOOR ATD4 W Series System Manual page 350

Appendices
A.5 Abbreviations
Term / abbrevia‐
tions
TZW
UART
UDP
UL
USB
USS
UPS
VCC
VDE
ZSW
348
Explanation
Technology status word (PROFIBUS / PROFINET)
Universal Asynchronous Serial Receiver and Transmitter
User Datagram Protocol (PROFINET)
Underwriters Laboratories (certification)
Universal Serial Bus
Universal serial interface
Uninterruptible power supply
Supply voltage
Association of Electrical, Electronic & Information Technologies e. V.
Status word (PROFIBUS / PROFINET)
ATD4xxW for industrial applications
System Manual, 06/2022, A5E51901827B AA