# UCN (Universal Control Network) Access Overruns/ UCN NODE Performance Problems

**URL:** <https://forumautomation.com/t/ucn-universal-control-network-access-overruns-ucn-node-performance-problems/330>\
**Category:** Honeywell\
**Created:** [March 20, 2015, 10:22am UTC](https://forumautomation.com/t/ucn-universal-control-network-access-overruns-ucn-node-performance-problems/330 "2015-03-20T10:22:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![instrumen](https://forumautomation.com/letter_avatar_proxy/v4/letter/i/65b543/32.png) [@instrumen](https://forumautomation.com/u/instrumen)\
**Post date:** [March 20, 2015, 10:22am UTC](https://forumautomation.com/t/ucn-universal-control-network-access-overruns-ucn-node-performance-problems/330/1 "2015-03-20T10:22:47Z")

</div>

The APM/PM/HPM has three processors that work in concert to perform its functions: 1. Control Processor 2. Communications (Comm.) Processor 3. IO Link Processor.  
Communications Processor Provides:  
UCN Network support, Network Access to HPM Data (Control Card and IOP Owned data) Peer-to-Peer Communications UCN Network Redundancy (Cable Handling) HPMM Redundancy Control Event Collection and Distribution Some of the distributed Time Synch functions

Control Processor Provides:  
Digital Composite Functions Device Control Functions Logic Processing Functions Process Module/ User written Sequential Control Programs Regulatory PV Functions Regulatory Control Functions Array Functions Flag/Numeric/Timer Functions

IOL Processor Provides:  
I/O Access IOL Network Redundancy (Cable Handling) Power Regulation for the HPMM Card set