Parameter Address
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SFMON: Protection failure
090 021
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Watchdog is monitoring the periodic start of protection routines. It has detected
an error.
1st device reaction: Warm restart
2nd device reaction: Device blocking
'Warning' output relay: Yes
'Blocked/faulty' output relay: Yes
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SFMON: Checksum error param
090 003
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A checksum error involving the parameters in the memory (NOVRAM) has been
detected.
1st device reaction: Warm restart
2nd device reaction: Device blocking
'Warning' output relay: Yes
'Blocked/faulty' output relay: Yes
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SFMON: Clock sync. error
093 041
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In 10 consecutive clock synchronization telegrams, the difference between the
time of day given in the telegram and that of the hardware clock is greater than
10 ms.
Device reaction: –
'Warning' output relay: Yes
'Blocked/faulty' output relay: –
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SFMON: Interm.volt.fail.RAM
093 026
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Faulty test pattern in the RAM. This can occur, for example, if the processor
module or the power supply module is removed from the bus module (digital).
This fault is only detected during device startup. After the fault is detected, the
software initializes the RAM. This means that all records are deleted.
1st device reaction: Warm restart
2nd device reaction: Device blocking
'Warning' output relay: Yes
'Blocked/faulty' output relay: Yes
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SFMON: Overflow MT_RC
090 012
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Last entry in the monitoring signal memory in the event of overflow.
Device reaction: –
'Warning' output relay: Yes
'Blocked/faulty' output relay: –
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SFMON: Semaph. MT_RC block.
093 015
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Software overloaded.
Device reaction: –
'Warning' output relay: Yes
'Blocked/faulty' output relay: –
P631
11 Troubleshooting
11-8 P631/EN M/R-11-C // P631-310-650
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