Rockwell Automation PIDE User Manual

Product Safety Group

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Milwaukee, WI USA 53204

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PRODUCT NOTICE

Notice of Potential Product Concern

Rockwell Automation issues a Product Notice when it identifies a product(s) anomaly that may cause commercial or customer

satisfaction concerns.

Rockwell Automation Library of Process Objects, P_PIDE Version 4.10.02

Critical Anomalies

Reference: 2021-02-001

Date: February 2021

Critical anomalies were identified with the P_PIDE version 4.10.02 of the Rockwell Automation Library of Process
Objects. The anomalies relate to malfunctioning shedding actions when the P_PIDE is in manual mode and lack of
bumpless transfer when transitioning from Automatic to Manual mode.

– Product Identification –

The affected products are the library objects associated with:

• Rockwell Automation Library of Process Objects (PlantPAx Process Library) – version 4.10.02

• RA Studio 5000 Application Code Manager Process Library Update – version 4.10.02

• Studio Architect Library Update – version 4.10.02

These products contain the affected library object – P_PIDE (version 4.10.02). The version number of the P_PIDE
can be identified in Logix by navigating to the Add-On Instructions tab in the Controller Organizer and selecting the
P_PIDE. The information in the Revision row indicates the version that is subject to this notice.

PRODUCT NOTICE
Page 2 of 6

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– Description –

Two critical anomalies were identified:

1. Shed Anomaly

The P_PIDE may not properly default its CV to the configured safe state value if the interlock conditions are
not met while in the P_PIDE is in Manual mode.

“Safe state” actions can be configured within the faceplate to be None (do nothing), Hold (current state at
the time of the interlock) or Use (a pre-specified value). “Interlocks” can be any number of specified
conditions that are required for the P_PIDE to function normally in Auto mode. If the “chain” of interlocks is
broken, the P_PIDE is expected to follow the behavior configured for its safe state.

The function works as expected when the P_PIDE is in Auto or Cascade mode but will not when the P_PIDE
is in Manual mode, leaving the potential for unexpected machine/equipment behavior.

In addition, the operator can override the “safe state” during an interlock shed condition by simply placing the
P_PIDE into manual mode and requesting a specific CV.

Affected
Version
(screen
capture)