The Bit Structure Of One Character And The Operation Of The Receive Buffer; The Bit Structure Of One Character; Receive Buffer And Received Data - YOKOGAWA Vigilantplant mR10000 User Manual

3.3 The Bit Structure of One Character and the
Operation of the Receive Buffer

The Bit Structure of One Character

Circuit idle
state

Receive Buffer and Received Data

IM 04P01B01-17E
The serial interface on the recorder communicates using start-stop synchronization. In
start-stop synchronization, a start bit is added every time a character is transmitted. The
start bit is followed by the data bits, parity bit, and stop bit. (See the figure below.)
Start bit
The data received from the PC is first placed in the receive buffer of the recorder. When
the received buffer becomes full, all of the data that overflow are discarded.
1 character
Data bit
(7 or 8 bits)
Parity bit
Even, Odd,
or None
Return to the idle
state (dotted line)
or the start bit of
the next data
character
(solid line)
Stop bit
3-7
3