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Product Nomenclature and Function
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CPSA-PCB100 Reference Manual
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80
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4.
LED Indicator
Status of the product is indicated by ON/OFF and flashing of LED.
The meaning of each LED is described below.
LED Indicator 1
Color and Description
LED
Color
Display
Description
PWR
Green
ON
Power has been supplied.
OFF
Power has not been supplied.
ST1
Green
-
ST1 and ST2 of LED flash while updating such as firmware.
ST2
Red
-
ST1 and ST2 of LED flash while updating such as firmware.
ERR
Red
ON
It lights up when error occurs.
OFF
It indicates the system runs normally.
DIO0 – DIO3
Green
ON
It lights up at the time of I/O.
OFF
It indicates there is no I/O.
LED Indicator 2
Color and Description
LED
Color
Display
Description
SD
Green Flashing
It flashes at the SD access.
OFF
It indicates there is no SD access.
COM-RX
Green Flashing
It flashes when receiving data by the RS-232C.
OFF
It indicates data has not been received by the RS-232C.
COM-TX
Green Flashing
It flashes upon transmitting data by the RS-232C.
OFF
It indicates there is no data transmission by the RS-232C.