Marquette Hellige GmbH
MicroSmart V 2.xx
Page 18
Servicing Instructions 227 470 35 B - 97.12
The keyboard also includes 4 LEDs which are selected via the keyboard interface.
Line LED:
This LED is supplied directly from the 15V of the power supply. It shows
whether the unit is mains-operated (LED on) or supplied from battery (LED
off).
LED LOBAT:
This LED is switched on and off by the controller. It shows that the battery
is in need of a recharge. A LOW level at the signal LED_LOBAT_ activates
the LED.
LED START:
This LED indicates the status of the unit. It means that the unit is in an active
state ! (processing, printing, etc. in progress). A LOW level at the signal
LED_START_ activates the LED.
LED STOP:
This LED indicates the status of the unit. It means that the unit is in a passive
state ! (processing, printing, etc. not in progress). A LOW level at the signal
LED_STOP_ activates the LED.
IR interface
The MicroSmart MC is equipped with an IRDA interface.
The IRDA interface is selected via the RS232 interface of the 68332.
(Signals TXD and RXD of the ’332).
In addition, an output port of the ’332 determines if the IRDA module (TOI3232) is in the
configuration or in the communication mode.
Configuration signal:
IR_BR_D = 0 ==> communication mode
IR_BR_D = 1 ==> configuration mode
