Hitachi HIDIC EH-150 Applications Manual page 25

6.1.1.4 Recoverable errors
The status LED will flash green if the error is recoverable. The flashing sequence are built up according to the figures below.
Color: Green
Two flashed:
0 250 500 750
Color: Green
Three flashed:
0 250 500 750
Color: Green
Four flashes:
0 250 500 750
Color: Green
Four flashes:
0 250 500 750
Number of Fault
flashes
2 PLC fault
3 Database download or
Database not present
4 Link length out of
range
5 Profibus DP master
fault
1000 1250 1500 1750 2000
1000 1250 1500 1750 2000
1000 1250 1500 1750 2000
1000 1250 1500 1750 2000
Table 6.1 Recoverable errors
Cause
If the PLC indicates a fault, the EH-RMP
will stop the data exchange and indicate this
by flashing the status LED two times.
When a database is downloaded to the
EH-RMP, or if there is no database present
in the EH-RMP, the status LED will flash
three times according to the pattern below.
If the LINK length configured from the PLC
is less than 1 or larger than 256 words or if
the link start address is not equal to zero, the
status LED will flash green four times.
The data exchange will not start.
If the EH-RMP reports an error during data
exchange, the status LED will flash green
five times.
6-2
2250 2500 2750 3000
2250 2500 2750 3000 3250 3500 3750 4000
2250 2500 2750 3000 3250 3500 3750 4000
2250 2500 2750 3000 3250 3500 3750 4000
Action
Check the PLC for cause of
the error.
Database downloading:
No database present:
Check the link length and the
link start address in the PLC
programming tool.
For information about the
fault, please check the 'Error
number register', and the
'Device Error register' in the
link information flag area.
Chapter 6 Indications
(ms)
(ms)
(ms)
(ms)
Wait for the database
downloaded to flash.
Download database