Genius Duplex Configuration - Emerson PACSystems RX3i User Manual

User manual
GFK-2892G
Figure 21:
1. To change the current selection, press F2 (tgl).
2. Press F3 (entr) to save the new selection.
3. Press F4 (next) to advance to the next configuration display.
Blocks can be configured for No CPU Redundancy, Hot Standby or Duplex redundancy. For
new blocks, it is set to No Redundancy. It must be changed if the block should be able to
receive output data from two CPUs.
In Hot Standby mode, a block receives output data from both CPUs but uses the data from
only one of them to drive its outputs. The block prefers outputs sent by the GCG with
SBA#31. If those outputs are not available, the block uses outputs from the GCG with
SBA#30. If no outputs from either GCG are available, outputs either Hold Last State or
default (as configured).
3.2.3

Genius Duplex Configuration

In Duplex redundancy mode, a block compares outputs received from two CPUs and sets
any outputs for which there is disagreement to their Duplex Default state.
All other devices on the Genius Bus (at SBA #1-29) that control discrete outputs need to be
properly configured in order to handle the two sets of output data they will be receiving
from SBA#30 and SBA#31. This parameter is called Duplex Default State. For Genius blocks
and Field Control, use the Genius Hand-Held Monitor (HHM) to set this parameter.
Figure 22:
1. To change the Duplex Default state, press F2 (tgl).
2. Press F3 (entr) to save the new selection.
3. Press F4 (next) to advance to the next configuration display.
Duplex Default State is configured for each output point on each active I/O device on the
Genius bus. The options are:
• Default ON
• Default OFF
• Hold Last State.
Configuration
Chapter 3
Sep 2019
33