Uart Basic Information; Baud Rate (Transfer Speed); Character Format; Figure 12: Data Character Transfer Format - Opticon MDI-4000 Series Serial Interface Manual

4.1.3

UART Basic Information

These are the basic UART Settings.
UART Settings
Setting
Transfer speed
Data length
Parity bit
Stop bit
Handshake
Other option
4.1.4

Baud Rate (Transfer Speed)

The baud rate is the rate at which bits are transmitted from the scan engine to the host and vice
versa. Both the reader and the host must be set to the same baud rate.
To activate and save the new configuration, you need to use the Z2 command (save settings in
non-volatile memory).
Note: You should configure these settings at "Custom Factory Default."
Baud Rate Commands
Command Description
K1 300bps
K2 600bps
K3 1200bps
K4 2400bps
K5 4800bps
K6 9600bps
K7 19200bps
K8 38400bps
K9 57600bps
SZ 115200bps
[D90 230400bps
[D91 460800bps
[D92 921600bps
4.1.5

Character Format

When data characters are transferred, a parity bit of 1 or 0 is added to each character so that
the total number of 1's in the data bits is either even (even parity) or odd (odd parity).
TxD/RxD
Start Bit
(1)

Figure 12: Data Character Transfer Format

Description
300 to 115200 bps
7/8 bits
None/Even/Odd
1/2 bits
None, BUSY/READY, Modem, ACK/NAK
Flow control, Inter character delay
Default
✓
LSB
Data Bits
MDI-4000 Series Serial Interface Manual
Condition
"Sending Command Packets" on page
See
MSB
Parity Bit
(7/8)
(0/1)
Default
9600 bps
8 bit
None
1 bit
None
Stop Bit
(1/2)
7.
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