Reset Smart Module For The Profinet Controller; Do I/O For Remote Io Modules - Emerson PACSystems RX3i User Manual

RSTI-EP PROFINET I/O Controller User Manual
GFK-2571R
If the iolan_controller01_L3 PROFINET Controller is communicating with the
versamax_pns01_L3 IO Device, the Bool variable L3_PNC01_PNS01_Status is set on. In a
simplex (non-redundant) system the value of the Primary output is the same as that of the
OK output. In a Hot Standby CPU Redundancy system, the Primary output sets the
L3_PNC01_Primary variable on when the iolan_controller01_L3 Controller is actively
controlling the versamax_pns01_L3 IO Device.
Figure 93: PNIO_DEV_COMM Example
4.7.3

Reset Smart Module for the PROFINET Controller

Service Request 24, Reset Smart Module
PACSystems RX3i CPU rack. The result is the same as extracting the PNC001 module from
the rack then re-inserting it.
When the RX3i CPU encounters the Reset Smart Module service request in the application
logic, it issues a reset command to the specified module (in this case, a PNC001). The
PNC001 terminates all connections to PROFINET IO-Devices. When the PNC001 powers up
and re-establishes communications with the CPU, the CPU sends the appropriate
configuration to the PNC001, and the PNC001 re-establishes connections with all its
configured PROFINET IO Devices.
Note:
4.7.4

DO I/O for Remote IO Modules

In addition to the normal I/O updates that occur during the PACSystems CPU's scan, the
application program in the CPU can use the DO I/O function to access the I/O data
associated with Remote IO Modules on the PROFINET network during the logic portion of
the CPU sweep. The DO I/O function can obtain or update the most recent I/O data that is
being consumed from or published to the Remote IO Module by the PROFINET IO Controller.
The DO I/O function can also be used to obtain data associated with the PROFINET
Controller itself.
It is important to remember that the I/O data being read or written by the DO I/O function
is data currently being stored by the PROFINET Controller within its memory. Executing a
DO I/O function from the CPU does not cause additional data to be produced or consumed
on the PROFINET NETWORK. Updates of the actual Remote IO Module I/O data occur during
the configured PROFINET cyclic scanning schedule. The DO I/O function provides the benefit
7 This Service Request is not supported by embedded PROFINET Controllers.
PROFINET System Operation
The Reset Smart Module request cannot be used to reset smart modules located in
remote nodes.
7 , can be used to reset a PNC001 module in the
Section 4
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