6. REDUNDANCY WITH NX3030 CPU
Direct Variable
AT variable
DG_NX4010.tRedundancy.
RedDgnLoc.sGeneral_Diag.*
Description
Variable Bit
3 bFailedPBUS2B
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 as-
sumed by the Active PLC. The passive
mode (communicating with the active mas-
ter) is assumed by the Non-Active PLC.
This failure can also be indicated in case
the NX5001 module has a microproces-
sor 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.
4 bFailureProfibus_2
TRUE – This PLC can’t communi-
cate in the master state (active or pas-
sive) in the PROFIBUS 2 network.
In case the PROFIBUS 2 network is
redundant, FailurePROFIBUS_2 results
from an AND logic between FailedP-
BUS2A and FailedPBUS2B. In case
the PROFIBUS 2 network isn’t redun-
dant, FailurePROFIBUS_2 is a copy from
FailedPBUS2A.
FALSE – There aren’t failures in the
PROFIBUS 2 network.
5 bProfibusVitalFailureAny
TRUE – This PLC can’t communicate in
the master state (active or passive) with at
least one of the PROFIBUS networks con-
figured in vital failure mode.
FALSE – There aren’t failures in the
PROFIBUS networks configured in vital
failure.
6 bProfibusVitalFailureAll
TRUE – This PLC can’t communicate in
the master state (active or passive) with all
the PROFIBUS networks configured in vi-
tal failure mode.
FALSE – There aren’t failures in the
PROFIBUS networks configured in vital
failure.
7 bTurnOffOtherPLC_Normal
TRUE – This PLC is closing the PX2612
relay to keep the other PLC off in normal
conditions and not due to PX2612 panel
test.
FALSE – The PX2612 relay is on
(bTurnOffOtherPLC_TestMode) or off.
0 bTurnOffOtherPLC_TestMode
TRUE – This PLC is closing the PX2612
relay to keep the other PLC off due to
PX2612 panel test mode.
FALSE – The PX2612 relay is on
(bTurnOffOtherPLC_Normal) or off.
1 bActiveLED TRUE – The PX2612 LED ACTIVE is on.
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