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L2388
EP010
ABB SACE
2.7
Identification
Serial number is used to identify the version of EP010 and the Modbus Device wich can be
connected to it.
Serial Number (S/N) has the following format:
Where “RR” (two digits) is the version of EP010, while “G” (one character) is related to the
connectable Modbus device. Value of G for each device type is reported in the relevant chapter
of the device-dependent section of this manual.
Important: at the end of start-up, the WD LED flashes at 0.5 Hz a number of times that’s
device dependent. This way, the type of device that can be connected to an EP010 unit can be
immediately identified in field.
2.8
Product specification
2.8.1 Start-up
At power up or after a reset, beginning with all the LEDs switched OFF, a diagnostic process
starts and the following sequence is performed:
Table 4. Start-up LEDs sequence
Then all LEDs stay ON for about 500 ms. After this time:
1 all the LEDs are switched OFF
2 the WD LED flashes a number of times depending on the device that can be connected
on the Modbus port
3
the EP010 enters the Run state.
2.8.2 Run state
The table reports the normal behaviour of the LEDs in this state.
A
N2
N4 F
G
N1
R
N3
R
Step LED
Color
ON
1
WD
Red
Power - on
2
RX
Green
RAM and Code Tests passed
3
FBP
Green
External clock ready
4
FAULT Yellow
Diagnostic completed
5
TX
Green
Ready
LED
Color
ON
OFF
FLASHING
PWR
Green
FBP connected
FBP disconnected (1)
WD
Red
Watchdog expired
TX
Green
FBP doesn’t communicate with EP010
FBP communicates AND
Modbus query to PU sending
