7.SERIAL INTERFACE
7.1Specifications
(1)Synchronizing system : Asynchronous
(2)Baud rate
150, 300, 600, 1,200, 2,400, 4,800, 9,600, 19,200 bps (Selected by the user)
(3)Word length
Start bit | : 1 bit |
Data bit | : 7 bits or 8 bits (Selected by the user) |
Parity bit | : Odd/even parity or no parity (Selected by the user) |
Stop bit | : 1 bit or more |
(4)Signal polarity
• Mark | = Logic "1" | |
• Space | = Logic "0" | (+3 V to +12 V) |
(5)Receive data (RD signal)
• Mark | = 1 |
• Space | = 0 |
(6)Data receiving control (DTR signal)
• Mark | : Data transfer not possible | |
• Space | : Data transfer possible | |
(7) Data transmission control (TD signal) | ||
DC1 code(11H) | : Data reception possible | |
DC3 code(13H) | : Data reception not possible | |
20 | CITIZEN |
