PACSystems VersaMax Genius Network Interface User Manual Section 4
GFK-1535D Jan 2023
Configuration 72
other words, whenever the controller at SBA 31 is online, it controls the
NIU’s outputs.
Duplex: When configured for Duplex mode, the NIU recognizes the
Genius Bus Controllers at Serial Bus Address 31 and 30. When in this
mode, the NIU compares the output values received from SBA 31 and
SBA 30. For each output point, if the output values are the same, the NIU
sets the output point to that state. If the output values are not the same,
the NIU will set the output to its configured Duplex Default State, which
must be configured for each output in the station as ON or OFF. If output
values from either SBA 30 or SBA 31 are not available, the NIU’s outputs
are controlled by the remaining bus controller. If output values from both
SBA 30 and SBA 31 are not available, the NIU’s outputs either default to
their configured default states (not their Duplex Default States) or hold
their last state, as configured. When the NIU is configured for Duplex
mode, no analog output modules are permitted in the station. GMR:
When configured for GMR mode, the NIU recognizes the Genius Bus
Controllers at Serial Bus Addresses 31, 30, and 29. Whenever a bus
controller with any of these SBAs is available, the NIU will assert (turn
green) its I/O enabled LED and report its faults to it. When the NIU is
configured for GMR mode, the only types of modules permitted in the
station are analog input modules. Output modules and discrete input
modules are not permitted. To use GMR mode, firmware version 3.00 or
higher of the Genius NIU is required, and the GMR System Software must
be version 4.05 or later. Do not select GMR mode for a Genius NIU in a
GMR system that is using GMR System Software version 4.04 or earlier.
Duplex Default: In Duplex Redundancy mode, the NIU may receive
different values for one or more output points from the two bus
controllers. If that happens, the NIU selects the Duplex Default State for
each of those points. If neither bus controller is available, the NIU’s
outputs go to their configured Hold Last State or Output Default State.
Please refer to Section 6: Redundancy for more information about
configuring the Redundancy features.
BSM Forced: Currently, the Bus Switch Module’s operating state cannot
be changed by the programmer.
BSM State: Currently, the Bus Switch Module’s operating state cannot be
changed by the programmer.
Series 6 Reference: If the network controller is not a Series Six PLC or
Series Five PLC, no entry is necessary here.
To Next Page
Loading...