Section 3: Glossary - Siemens 7SR45 Argus User Manual

Chapter 4 - 7SR45 Data Communications Definitions

Section 3: Glossary

Baud Rate
Data transmission speed.
Bit
The smallest measure of computer data.
Bits Per Second (bps)
Measurement of data transmission speed.
Data Bits
A number of bits containing the data. Sent after the start bit.
Parity
Method of error checking by counting the value of the bits in a sequence, and adding a parity bit to
make the outcome, for example, even.
Parity Bit
Bit used for implementing parity checking. Sent after the data bits.
RS485
Serial Communications Standard. Electronic Industries Association Recommended Standard Number
485.
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.
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