MDI-4000 Series Serial Interface Manual
20
4.1.1
How to Switch to UART from USB
When you change the interface to UART from USB, the configuration change persists through a
firmware update.
Use one of these methods to change the serial interface to UART from USB:
•
Send this command:
[X.ZU2[X.ZZ2
•
Read this 2D menu barcode:
4.1.2
UART Interface Signal
An IRISO Electronics Co., Ltd. 9681-12(12PIN) (bottom contact) equivalent connector is used.
No.
Name
Function
I/O Conditions State
Notes
1
TRIGn
Trigger
In
L: Start operation
H: No action
100kΩ pull up
on module
2
AIM/WAKEn
Recovery signal
from Low Power
state
In
L: Recover from low
power state
H: No action
100kΩ pull up
on module
Aiming control
signal in other
states than Low
Power
In
L: Aiming LED on
H: Aiming LED off
3
GR_LEDn
Good read LED
Out
L: LED on
H: LED off
4.7kΩ pull up
on module
EX_ILLUM
Control of an
external light
source.
Out Configured
*1
L: External
Illumination On
H: External
Illumination Off
4
BUZZERn
Buzzer
Out
100kΩ pull up
on module
*2
5
POWERDWN Indicates Low
Power state
Out
L: Normal state
H: Low Power state
100kΩ pull up
on module
6
RTS
Communication
control signal to
host system
Out
10kΩ pull up
on module
7
CTS
Communication
control signal
from host system
In
100kΩ pull up
on module
8
TxD
Transmitted data
signal
Out
10kΩ pull up
on module
9
RxD
Received data
signal
In
100kΩ pull up
on module
10
GND
System ground
11
VCC
Power input
In
3.3V or 5.0V
12
Reserve
In
N.C
*1
When this is set, Good Read LED cannot be used.
*2
Tone and sound pressure are controlled by the pulse-width modulation (PWM) signal.
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