Combination Of Several Leds - Siemens SIMATIC Distributed I/O System DP/ASi Link Manual

Combinations In addition to the different displays described in Table 8-2 and Table 8-3,
combinations of several LEDs are also possible. Table 8-4 shows you the
meanings of the displays.
Table 8-4

Combination of several LEDs

LEDs
All on DP/ASi link starting up.
All on except ASi A fault has occurred in the PROFIBUS-DP
POWER FAIL during start-up.
ASi SLAVE FAIL DP/ASi link has not detected an ASi slave.
flashing
DP/ASi link not starting.
BF flashing Station number 126 or 127 is set on the DIP
switch block or switch 8 is in OFF position.
CONFIG ERROR Normal mode: ASi slave 31 has failed
and all ASi SLAVE
S7 start-up: data record 128 missing
FAIL light
ASi slave failure If several ASi slaves have failed, the failed ASi slave having the lowest ASi
address is indicated with the "ASi-SLAVE FAIL" LEDs. You recognize the
failure of several ASi slaves by the "AUTOPROG AV" LED not being on.
Check, therefore, the ASi cable for damage in all cases as well.
DP/ASi link reac- If the DP/ASi link detects that an ASi slave has failed or that there is no
tion
longer a connection to it, it takes the following action:
All data, including the reset data of the failed ASi slave, are still transmitted
to the DP master.
Check
If you have remedied the reason for the failure, you can establish immedi-
ately whether the DP/ASi link is working properly again. If everything is in
order, the DP/ASi link enters normal operation. Only the "RUN" LED is on.
Distributed I/O System DP/ASi Link
EWA 4NEB 710 6055-02b
Meaning
The input data to the DP master are reset to 0 for the failed ASi slave.
A diagnostic message is generated (refer to section 8.2)
Diagnostics and Error Handling
Remedy
–
Check the PROFIBUS-DP, the DP master
and the bus connection.
Check the ASi cable and the cable termina-
tion.
Set the correct station number on the DIP
switch block.
Set switch 8 on the DIP switch block to ON
and set a valid station number in the EE-
PROM.
Check your configuration. Possibly no ASi
slaves have been configured.
8-5