Interface Specifications - Scale House GAI420 Operation Manual

10.3 Interface Specifications

(1) Transmission system
(2) Transmission rates
(3) Transmission codes
(4) Signal levels
(5) One-character bit configuration Start bit:
(6) Parity bit:
Logic "1"
Logic "0"
36
Serial transmission with start-stop synchronization
1200/2400/4800/9600 bps.
ASCII codes (8-bit)
Compliant with EIA RS-232C
HIGH level (Data logic 0)
LOW level (Data logic 1)
1 bit
Data bit: 8 bits
Parity bit: 0/1 bits
Stop bit: 2 bits
none/odd/even
LSB
1 2 3 4
Start bit
+5 to +15 V
-5 to -15 V
MSB
5 6 7 8
Data bit
(may be omitted)
9 10 11 12
Stop bit
Parity bit