Proline Promass F 500 Modbus RS485 Diagnostics and troubleshooting
Endress+Hauser 155
Power
I/O 2
I/O 3
I/O 3
1
2
3
4
5
3.
-
+
-
ESC
2.
Power
open
press
open
press
ESC
E+
-
I/O 4
Power
I/O 2
I/O 3
1.
A0029689
1 Supply voltage
2 Device status
3 Not used
4 Communication
5 Service interface (CDI) active
1. Open the housing cover.
2. Remove the display module.
3. Fold open the terminal cover.
LED Color Meaning
1 Supply voltage Off Supply voltage is off or too low
Green Supply voltage is ok
2 Device status Off Firmware error
Green Device status is ok
Flashing green Device is not configured
Flashing red A device event with "Warning" diagnostic behavior
has occurred
Red A device event with "Alarm" diagnostic behavior has
occurred
Flashing red/green Device restart
3 Not used – –
4 Communication White Communication active
Off Communication not active
5 Service interface (CDI) Off Not connected or no connection established
Yellow Connected and connection established
Flashing yellow Service interface active
Proline 500
Different LEDs in the transmitter provide information on the device status.