Led Indicators - Relay PW100 User Manual

2.4 LED indicators

There are in total six LEDs in the front part showing the status of the M-Bus. A lighted LED has the following
meaning:
POWER
TRANSMITTING
RECEIVING
MAX CURRENT
SHORT CIRCUIT
M-BUS ACTIVE
Two LEDs in the RJ45 Ethernet socket show the state of the network and the virtual comport. The LEDs have
a reduced intensity of 20% of the normal value without a connected network cable. Once a network is con-
nected, the brightness changes to 100%. The most important flash patterns have the following meaning:
You can find all other patterns in the online help of the DS Manager (F1-button) in the chapter "Firmware
Manuals / Device Server Application Firmware / Status LED Signals (Red = Green / Green = Yellow).
PW100 · User Manual Version 1.0 - 11/2020
The M-Bus output voltage is switched on.
The Master transmits data.
Minimum one meter replies with data.
The maximum number of connectable meters is exceeded (warning).
M-Bus over current / short circuit (2 Hz flashing)
One interface is active and exclusively occupies the M-Bus.
No connection established
A connection is active
A connection is established and a com-
munication is active
Device Server performs a restart
PW100
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