Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 79
Any Expansion chassis running with two healthy RTNs. Reset detection on the SYSCON (System
Controller) causes an immediate "Failover" to the other STANDBY RTN who then becomes the new
System Controller for this chassis. Reset detection on the STANDBY unit causes a HealthFault that
removes it from STANDBY mode.
The front-panel RUN/RESET led will be RED while reset is held and will turn GREEN for a few
seconds after releasing reset. After turning OFF, it will again turn GREEN when the operating system
starts to boot.
BEFORE REMOVAL
!
RESET
MODULE
This module should be reset immediately before removing it from the
chassis. This notifies the module that it will be removed and provides a
graceful failover to another healthy Remote RTN module if available.
7.1.6—RTN Ports
Two Real Time Network ports (RJ45) provide communications between the expansion chassis Remote
RTN modules and the main-chassis CPU modules. Through these ports, expansion chassis I/O data is
made available to the GAP Application running in the main-chassis CPUs.
Double shielded, Cat 5 Ethernet cables (SSTP) are required for
customer installations.
Cable length between the Main rack and RTN switch is 3 m (10 ft.)
max.
Cable length between the RTN switch and Expansion rack is 30 m
(100 ft.) max.
7.1.6—Ethernet Switch Hardware
For redundant systems, copper or fiber optic Ethernet switches are required to achieve communication
and hardware redundancy. Specific Ethernet switches have been tested and approved to obtain
expansion chassis real time performance and redundancy.
Due to the critical nature of communications with an RTN expansion rack, it is required to use Woodward
approved copper and fiber Ethernet switches for robust system operation. At the time of this writing, the
following hardware part numbers are approved.
Notes:
The Real Time Network (RTN) is a dedicated Woodward I/O expansion network-- no external Ethernet
devices are allowed.
Each RTN Switch on the dedicated RTN network must be the same Make and Series. No mixing and
matching the on the RTN network is allowed.
1752-423, Hirschmann copper Ethernet switch (RS2-TX, 8port) Obsolete Dec 2016
1711-1069, Hirschmann Fiber Optic Switch (RS2-4TX/1FX) Obsolete Dec 2016
1751-6077, Hirschmann Fiber Optic Switch (RS2-3TX/2FX) Obsolete Dec 2016
1711-1350 , Phoenix copper Ethernet switch (FL SWITCH SFNT 8TX) Available 4th quarter 2016
1711-1351, Phoenix Fiber Optic Switch (FL SWITCH SFNT 7TX/FX) Available 4th quarter 2016
7.1.7—Expansion Racks using Copper or Fiber cables
MicroNet Plus 8-Rack systems are supported by locating expansion racks locally with the main chassis or
in different remote locations using fiber optic cables and Ethernet switches. A maximum of 7 MicroNet
Plus expansion racks (14 slot or 8 slot versions) are supported in up to 7 different remote locations using
fiber optic Ethernet switches. It is required to use Woodward approved hardware for robust operation.
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