Hello all.
A rather unique problem has showed it self to me. I have 2 identical machines that run Siemens S7-300 PLC's. One machine works fine but the other stops mid cycle and I could find out why until I looked at the diagnostic buffer of the PLC. This is the error that is output when the machine stops.
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OB request error
No relevance for user (Z1): 0000
Cause Cyclic interrupt clock pulse generator 6
Causing OB: Cyclic interrupt OB (OB35)
Causing priority class 12
Requested OB: Timing Error OB (OB80)
Internal error, Incoming event
---
The code has not been changed at all on the PLC's. And I don't even use the cyclic interupt for any function. So I can't understand why this is happening just on ONE machine? Could it be a defective CPU? What can I do to resolve this problem? Any input would be great...
Thanks in advance.
Regards
Ales
A rather unique problem has showed it self to me. I have 2 identical machines that run Siemens S7-300 PLC's. One machine works fine but the other stops mid cycle and I could find out why until I looked at the diagnostic buffer of the PLC. This is the error that is output when the machine stops.
---
OB request error
No relevance for user (Z1): 0000
Cause Cyclic interrupt clock pulse generator 6
Causing OB: Cyclic interrupt OB (OB35)
Causing priority class 12
Requested OB: Timing Error OB (OB80)
Internal error, Incoming event
---
The code has not been changed at all on the PLC's. And I don't even use the cyclic interupt for any function. So I can't understand why this is happening just on ONE machine? Could it be a defective CPU? What can I do to resolve this problem? Any input would be great...
Thanks in advance.
Regards
Ales