Siemens 7SR12 Argus Manual page 250

7SR120 Technical Manual
Start Bit
Bit (logical 0) sent to signify the start of a byte during data transmission.
Stop Bit
Bit (logical 1) sent to signify the end.
USB
Universal Serial Bus standard for the transfer of data.
WAN
Wide Area Network. A computer network covering a large geographic area.
Chapter 4 - Page 82 of 84 © 2017 Siemens Protection Devices Limited