PiXtend eIO Hardware Manual
6.2.4.LED Signaling
6.2.4.1 Signaling: Supply voltage LED “+5V”
The green LED with the inscription "+5V" signals the presence of the internal supply
voltage of 5 V DC.
Status
Designation
Meaning
Off / faint lights
out of order
Supply voltage not available or insufficient
On
operational
Supply voltage available
Table 14: LED “+5V” - Signaling of the supply voltage
If this LED does not light or only glow slightly, then the supply of the device is not available
or insufficient. In this case, check the wiring, the voltage between the terminals "VCC" and
"GND" and check again the requirements of the power supply according to chapter 6.2.3.
6.2.4.2 Signaling: communication LED "COM"
The orange LED with the inscription "COM" signals data transmissions on the RS485 bus.
It is irrelevant whether the transmitted data are intended for the respective device or not.
Every communication on the bus causes a flashing.
If no data transmission takes place, this LED remains dark.
www.pixtend.com
Copyright by Qube Solutions GmbH
79 / 119
Figure 32: Status LEDs “ERR”, “COM” & “+5V” on PiXtend eIO modules
