Input; Output; Other Dbus Functionality; Alarms Posted In Plc Fault Table - Emerson PACSystems RX3i Application Manual

Application Guide
GFK-2928C

Input

DB

Output

PNCST
A_PSD
B_PSD
DSB_A
DSB_B
CSB:

Other DBUS Functionality

Alarms Posted in PLC Fault Table

LOD
AOD

Real-time View of Genius Devices on Dual Busses

Device Status Bits
PLC Hardware Configuration
This receives the Genius bus parameters (via a variable of "user
defined type" G_Bus). Note that the parameters are configured
using the function blocks derived from either INIT_GB00 or
INIT_GBnn.
Provides a copy of the status information for the associated
PROFINET Controller module.
Provides a copy of the Genius Communication Gateway's PROFINET
Status Data from Bus A.
Provides a copy of the Genius Communication Gateway's PROFINET
Status Data from Bus B.
Provides a copy of the Genius Communication Gateway's Genius
Status Data for all Configured Genius devices on Bus A. (This is like
the Device Status Bits provided by a Genius Bus Controller.)
Provides a copy of the Genius Communication Gateway's Genius
Status Data for all Configured Genius devices on Bus B.
Provides device connection status for all configured Genius devices
on the dual bus pair. (Each bit is latched ON by the rising edge of
either of the corresponding Bus A or Bus B Genius Status bits. The bit
is unlatched if both Bus A and Bus B Status Bits are OFF for a period
greater than the default timeout period.)
An internal function that posts Loss-of-Device if the device is not
attached to either Bus A or Bus B, and the default timer has expired.
The time-stamped message appears in the PLC Fault Table.
If the device has been offline, this internal function posts Addition-
of-Device if the Genius device successfully logs onto either Bus A or
Bus B. The time-stamped message appears in the PLC Fault Table.
Zoom into the block to observe the current connection status for all
configured Genius devices on the dual bus pair. Four rungs display
the device status on Bus A and Bus B. The index inside the brackets
correspond to the Genius Serial Bus Address. Figure 30
demonstrates the logic for monitoring SBA 0 through 7, so it needs
to be expanded to cover the entire bus.
Chapter 5
Oct 2019
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