6. Redundancy with NX3030 CPU
335
Direct Representation
Variable
AT variable
DG_NX4010.tRedundancy.R
edDgnLoc.sGeneral_Diag.*
application or these have been synchronized
already with the stand-by PLC.
TRUE – Failure in the NX4010 module. The
NX3030 CPU can’t communicate with this
module through bus, or there’s a failure in the
NX4010 microprocessor.
FALSE – The NX4010 module is working
properly.
TRUE – This PLC can’t communicate in the
master state (active or passive) in the
PROFIBUS 1 A network. The master mode
(communicating with slaves) is assumed by the
Active PLC. The passive mode (communicating
with the active master) is assumed by the Non-
Active PLC. This failure can also be indicated in
case the NX5001 module has a microprocessor
failure, or in case it can’t communicate with the
NX3030 CPU via bus.
FALSE – There aren’t failures in the PROFIBUS
1 A network.
TRUE – This PLC can’t communicate in the
master state (active or passive) in the
PROFIBUS 1 B network. The master mode
(communicating with slaves) is assumed by the
Active PLC. The passive mode (communicating
with the active master) is assumed by the Non-
Active PLC. This failure can also be indicated in
case the NX5001 module has a microprocessor
failure, or in case it can’t communicate with the
NX3030 CPU via.
FALSE – There aren’t failures in the PROFIBUS
1 B network.
TRUE – This PLC can’t communicate in the
master state (active or passive) in the
PROFIBUS 1 network. In case the PROFIBUS 1
network is redundant, FailurePROFIBUS_1
results from a AND logic between
FailedPBUS1A and FailedPBUS1B. In case the
PROFIBUS 1 network isn’t redundant,
FailurePROFIBUS_1 is a copy from
FailedPBUS1A.
FALSE – There aren’t failures in the PROFIBUS
network.
TRUE – this PLC can’t communicate in the
master state (active or passive) in the
PROFIBUS 2 A network. The master mode
(communicating with slaves) is assumed by the
Active PLC. The passive mode (communicating
with the active master) is assumed by the Non-
Active PLC. This failure can also be indicated in
case the NX5001 module has a microprocessor
failure, or in case it can’t communicate with the
NX3030 CPU via bus.
FALSE – There aren’t failures in the PROFIBUS
2 A network.
TRUE – This PLC can’t communicate in the
master state (active or passive) in the
PROFIBUS 2 B network. The master mode
(communicating with slaves) is assumed by the
Active PLC. The passive mode (communicating
with the active master) is assumed by the Non-
Active PLC. This failure can also be indicated in
case the NX5001 module has a microprocessor
failure, or in case it can’t communicate with the
NX3030 CPU via bus.
FALSE – There aren’t failures in the PROFIBUS
2 B network.
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General