Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, PRIOR to Firmware rev. 3.0 - Manual (Page 314)

Publication 1404-UM001D-EN-E - October 2004
F-8 Powermonitor 3000 EtherNet/IP Device Profile
the Assembly Object instances may be accessed via Unscheduled
Messaging; either UCMM messages or Class 3 connections.
For reasons dictated by existing PM 3000 firmware functionality, the
manner in which the Assembly Object accesses PM 3000 data differs
for writes as opposed to reads. Both I/O and unscheduled writes of
data to the PM 3000 are handled via interaction with the DPRAM task
while reads are resolved directly from mirrored data within the DC’s
RAM.
PCCC Object
The PCCC Object is a Rockwell Automation vendor specific object
which provides a means to handle PCCC messages encapsulated
inside CIP messages.
Class Attributes
The PCCC Object does not support any class attributes.
Instance Attributes
The PCCC Object does not support any instance attributes.
Common Services
The PCCC Object does not support any common services.
Table F.17
Class Code: 0x67 hex