Front Panel - Hmi; Led Indicators - Protrol IPC4020 Manual

The sticker of the front board is located on the rear side of the board. It is not necessary to remove the
front board to be able to see the identity number when needed during support cases or reclaims.
Figure 3. Example board identity.
Front Panel – HMI
3.1

LED Indicators

There are various LED indicators on the front panel for inputs, outputs, communication ports and status
purposes.
Figure 4. Front panel of IPC4020.
Each binary input and output have a LED above its screw terminal and reflects the position of the
input/output. Voltage on an input activates the LED. Closed relay output activates the LED.
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