6. REDUNDANCY WITH NX3030 CPU
Direct Variable
AT variable
DG_NX4010.tRedundancy.
RedDgnLoc.sGeneral_Diag.*
Description
Variable Bit
7 bFailedPBUS1A
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 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 1 A network.
0 bFailedPBUS1B
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 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 1 B network.
1 bFailureProfibus_1
TRUE – This PLC can’t communi-
cate in the master state (active or pas-
sive) in the PROFIBUS 1 network.
In case the PROFIBUS 1 network is
redundant, FailurePROFIBUS_1 results
from an AND logic between FailedP-
BUS1A and FailedPBUS1B. In case
the PROFIBUS 1 network isn’t redun-
dant, FailurePROFIBUS_1 is a copy from
FailedPBUS1A.
FALSE – There aren’t failures in the
PROFIBUS network.
%QB(n+6) 2 bFailedPBUS2A
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 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 A network.
336
To Next Page
Loading...
