6. REDUNDANCY WITH NX3030 CPU
Direct Variable
AT Variable
DG_NX4010.tRedundancy.
RedDgnLoc.sNETA_Diag.*
Description
Variable Bit
0 bGeneralFailure
TRUE – The synchronism channel has
some type of failure. The 3 next diagnos-
tics will indicate the specific failure.
FALSE – The synchronism channel is
working properly.
1 bInternalFailure
TRUE – The detected failure has its cause
within this PLC. Such failures are treated
in a special way.
FALSE – The NX4010 module is working
properly.
%QB(n+33) 2 bLinkDownFailure
TRUE – The AL-2319A cable is discon-
nected from the NX4010 module or broken
in one of the PLCs.
FALSE – The AL-2319A cable is con-
nected to the NX4010 module.
3 bTimeoutFailure
TRUE – This failure is reported in case
a synchronization service hasn’t been fin-
ished successfully within a specific time-
out and failures from the type bInternal-
Failure or bLinkDownFailure haven’t been
found to justify that.
FALSE – The NX4010 module is working
properly.
4 .. 7 bReserved[4..7] Reserved.
Table 210: NETA Interface Specific Diagnostics
The “sNETB_Diag” substructure has the following fields for NETB synchronism channels diagnostics:
Direct Variable
AT Variable
DG_NX4010.tRedundancy.
RedDgnLoc.sNETB_Diag.*
Description
Variable Bit
0 bGeneralFailure
TRUE – The synchronism channel has
some type of failure. The 3 next diagnos-
tics will indicate the specific failure.
FALSE – The synchronism channel is
working properly.
1 bInternalFailure
TRUE – The detected failure has its cause
within this PLC. Such failures are treated
in a special way.
FALSE – The NX4010 module is working
properly.
%QB(n+34) 2 bLinkDownFailure
TRUE – The AL-2319B cable is discon-
nected from the NX4010 module or broken
in one of the PLCs.
FALSE – The AL-2319B cable is con-
nected to the NX4010 module.
340
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