7.8 Message List of the Operating Messages
If an error generates an operating message, the red SF LED on the front of the
module is illuminated. The operating messages are generated coming and going.
Error
No.
Operating messages
- Meaning
Solution
Internal module error going
1 Reboot due to error in RAM read-write
testing
The error can mean that the module is
defective.
This fault must be reset with the "Error
Acknowledge" command.
Note: Error is deleted by acknowledging but
is never set since there is no more activity
when a RAM fault occurs
Watchdog,
Error 2
2 New start caused by watchdog error
(mandatory acknowledgment)
The module had to be reset because of a
critical error.
This fault must be reset with the "Error
Acknowledge" command.
3 New start caused by program error
(mandatory acknowledgment)
The error can mean that the module is
defective. This fault must be reset with the
"Error Acknowledge" command. Contact the
SIWAREX Hotline.
4 Lost process alarm
Process alarm on the S7 interface
5 Parameter error (Data loss) Parameter error (Data loss).
One or more data segments in non-volatile
memory are defective.
Load the defective data records e.g. with the
Set default value command or transfer the
affected records individually.
External error going
17 Limit for load cell signal exceeded or
undershot
The measurement is too high. Measure the
measurement voltage with a multimeter and
check the load cells. Check the set
characteristic value in DR 3.
18 Wire break The connection to the load cells has been
broken. Check the load cell connection.
19 ADC error The AD converter must be reset because of
a fault.
20 Timeout Life bit The SIMATIC-CPU has not tracked the life bit
within the defined time. The communication
through the FB SIWA is damaged.
23 Belt speed too low The pulse input no longer delivers pulses
(less than 2 pulse/s)
24 Fault on RS485 Communication fault on the RS485
interface.
Table 7-3 List of Operating Messages –going
7-110 SIWAREX FTC
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