Brief description of ASM hardware
A.3 ASM 452
FC 45
A-16
Function manual, Release 03/2006 , J31069-D0167-U001-A2-7618
PROFIBUS Diagnosis
"ON" LED is not on or is flashing
If the "ON" LED is not on, this means that either no supply voltage or too low voltage is
available to the ASM452. Possible causes include a bad fuse or missing/too low supply
voltage. Flashing or absence of this LED may mean that the module is defective.
Diagnosis with LEDs
The following table lists possible error indications with their meanings and provides
remedies.
Table A-10 LED indication for PROFIBUS diagnosis
"BF"
LED
"SF" LED
Cause of error
Error correction
•
ASM 452 is in start-up mode.
–
•
Connection to DP Master failed.
•
ASM 452 not detecting a baud rate.
•
Check the PROFIBUS DP connection.
•
Check the DP master.
On
Status
not
relevant
•
Bus interrupt
•
DP Master not functioning
•
Check all cables on your PROFIBUS DP network.
•
Check whether the connector plugs for PROFIBUS
DP are securely plugged into the ASM 452.
Flashe
s
On
•
The configuration data sent to the ASM
452 by the DP master do not match the
configuration of the ASM 452.
•
Check the configuration of the ASM 452
(input/output, PROFIBUS address).
•
Correct GSD file used?
(SIEM80B6.GSD)
Flashe
s
Off
•
ASM 452 has detected the baud rate, but
is not being addressed by the DP Master.
•
ASM 452 has not been configured.
•
Check the PROFIBUS address set on the ASM
452 or in the configuration software.
•
Check the configuration of the ASM 452 (station
type).
On
Flashes
•
There is a hardware defect in the ASM
452.
•
Replace the ASM 452.