Citizen Systems iDP-562 - Manual (Page 13)

iDP-562 User’s Manual
CITIZEN 8
5. Serial Interface
5.1 Serial Specifications
(1) Synchronous Asynchronous
(2) Baud rate
150, 300, 600, 1200, 2400, 4800, 9600 BPS
One of the above baud rates is selected by users.
(3) Data Format
Start bit: 1 BIT
Data bit: 7 or 8 BIT
Parity bit: Odd number parity, even number parity or no parity check, one of which is selected by users.
Stop bit: 1 or 2 BIT
(4) Signal level
RS-232C MARK = 1 (-3V ~ -12V)
SPACE = 0 (+3V ~ +12V)
CURRENT LOOP MARK = 1 (Current)
SPACE = 0 (Non-current)
TTL MARK = 1 (Open collector)
SPACE = 0 (Open collector)
(5) DTR signal
RS232C and TTL
MARK: Not ready for DATA receipt
SPACE: Ready for DATA receipt
Current loop
When current between connector 17 pin and 24 pin is
MARK (Current): Ready for DATA receipt
SPACE (Non-current): Not ready for DATA receipt