Genius Hot Standby Dual Bus Configuration - GE GFK-2892F User Manual

For Genius and Field Control devices, use the Genius Hand-Held Monitor (HHM) to set or verify these
parameters.
GCG001 offers an optional enhancement to Genius Dual Bus. It is PROFINET Media Redundancy, shown in
Figure 21. PROFINET Media Redundancy (MRP) offers a solution where the PROFINET network is more likely to
be compromised. Genius Dual Bus offers a solution where the Genius Bus is more likely to be compromised.

Genius Hot Standby Dual Bus Configuration

Genius Hot Standby Dual Bus Configuration combines the two architectures discussed in Section 3.2.2 and
3.2.4. The result is diagrammed in Figure 21. There is a total of four Genius Bus Controllers involved, here
shown as GCG001 units.
•
The Primary CPU hosts two GCG001 units, each using SBA#31. One of these is resident on Bus A; the
other is resident on Bus B.
•
The Secondary CPU hosts two GCG001 units, each using SBA#30. One of these is resident on Bus A;
the other is resident on Bus B.
•
Each I/O drop connects to Genius Bus A and to Genius Bus B via a Bus Switching Module (BSM). Some
devices have built-in BSMs, while others, such as the Genius blocks, employ an external BSM. In the
event the active bus becomes disconnected, the BSM is commanded by its host I/O device to switch to
the alternate bus. In this way, the application is protected against failure of either bus and/or a Bus
Controller (here GCG001).
•
It is permitted to have non-redundant I/O devices (i.e. I/O connected to just one Genius Bus – none are
diagrammed below. Such devices would not employ a BSM.
•
The two CPUs are synchronized to accomplish Hot Standby. In Figure 21, a dual RMX link is
diagrammed. For a CPE400, the synchronization would be performed over LAN3.
GFK-2892F
1. To change the BSM Present configuration, press
F2 (tgl).
2. To save the new selection, press F3 (entr).
3. Press F4 (next) to advance to the next
configuration display.
1. To change the configuration, press F2 (tgl).
2. To save the new selection, press F3 (entr).
3. Press F4 (next) to advance to the next
configuration display.
1. To change the configuration, press F2 (tgl).
2. To save the new selection, press F3 (entr).
3. Press F4 (next) to advance to the next
configuration display.
March 2019
Chapter 3. Configuration
35