Citizen Systems iDP-562 User Manual download pdf (Page 13)

iDP-562 User’s Manual

CITIZEN

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

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Citizen Systems iDP-562 User Manual Page 13