LED PWR #

The PWR (Power) LED indicates the device status.

Signal Function

Green

Power supply is connected.

Red

There is a communication fault between connected extension modules.

LED A1 …​ AX #

Depending on the device, up to 5 LEDs can be used freely:

  • RevPi Flat S, RevPi Connect 4 und RevPi Connect 5: LED A1 …​ A5

  • RevPi Connect S/SE: LED A1 …​ A3

  • RevPi Core S/SE: LED A1 …​ A2

The LEDs can be used for user-specific requirements such as indicating a network connection, indicating that a memory limit has been exceeded, monitoring a process and indicating faults.

The LEDs can be switched in the command line application piTest with the variable RevPiLED .

The output RevPiLED has a defined byte length and therefore has a certain number of bits that are read from right to left. Certain bit positions are each assigned to an LED. The LED is switched by setting the respective bits to 0 or 1.

An LED signal is switched in the command line with the command piTest -w RevPiLED,x , where x corresponds to the decimal value calculated from the respective bit pattern.

To switch several LEDs simultaneously, the respective decimal values are added together.

Example: If LED A1 shall flash red and LED A2 green at the same time, the command is piTest -w RevPiLED,17 (bit pattern: 0001 0001 = decimal values 1+16).

Note

If a signal is to be added to an existing LED circuit, the value for all desired signals must be recalculated and rewritten.