Siemens SIMATIC Ident Function Manual page 98

Brief description of the hardware
A.4 ASM 475
The following ASM states are indicated with the LEDs PRE, ERR and SF.
SF
ON
ON
OFF
OFF
any
OFF
98
PRE_1 ERR_1
OFF/ON ON (perm.)
OFF ON
2 Hz OFF
2 Hz 2 Hz
5 Hz 5 Hz
OFF 1x flash
every 2 s
PRE_2 ERR_2 Description, Causes, Remedy
OFF/ON ON (perm.) Hardware is defective (RAM, Flash, ...)
OFF OFF Loader is defective (can only be fixed at
the plant).
2 Hz OFF Firmware loading process is active
and/or no firmware detected
→ load firmware
→ do not switch off ASM during this
process
2 Hz 2 Hz Loading of firmware aborted due to error
→ restart needed
→ reload firmware
→ check update files
5 Hz 5 Hz Operating system error
→ switch ASM off/on
OFF 1x flash ASM has booted and is waiting for a
every 2 s RESET (init_run) from the user.
Function Manual, 07/2012, J31069-D0166-U001-A4-7618
FB 45 for MOBY U, MOBY D, RF200, RF300