Citizen Systems iDP-562 Benutzerhandbuch
iDP-562 User’s Manual
CITIZEN
19
5.6 DATA Construction
5.6.1 Serial Data format
1. Start BIT
2. DATA BIT (+ Parity BIT)
3. Stop BIT (1 ~ 2 BIT)
2. DATA BIT (+ Parity BIT)
3. Stop BIT (1 ~ 2 BIT)
(1)
START BIT
At 1 / 2 BIT after (a), signal level is checked out, (b). When signal level is MARK, continuous search for START
BIT is made for the next bit.
BIT is made for the next bit.
(2)
DATA BIT + PARITY BIT
DATA BIT and PARITY BIT are checked out every 1 / 2 BIT from the half point of START BIT, (b).
Signal level of these points (MARK = 1, SPACE = 0) are read as input DATA.
The sequence of these BIT is BIT 0, BIT 1 ~ PARITY BIT from START BIT.
Signal level of these points (MARK = 1, SPACE = 0) are read as input DATA.
The sequence of these BIT is BIT 0, BIT 1 ~ PARITY BIT from START BIT.
(3)
STOP BIT
STOP BIT is 1 or 2 BIT and its signal level is MARK. If SPACE LEVEL is read at STOP BIT, FRAMING
ERROR occurs.
ERROR occurs.