Overview
Manuals
Controller Identity
I/O and FTE
Replacement Context
Features:
- Honeywell names 8C-PCNT03 as a coated Series 8 C300 controller.
- The 2024 table lists two 750 kbps Series 8 I/O links and FTE uplinks.
- The manufacturer identifies 8C-PCNT03 as the successor to 8C-PCNT02.
Honeywell's May 2024 Series 8 Controller and I/O Specification lists 8C-PCNT03 as a coated C300 controller and 8C-TCNTA1 as its coated IOTA. In the PCNT03 column it gives a 24 V power requirement through the Series 8 power system, 16 MB program memory, a single processor core, two I/O links configurable for Series 8, 750 kbps I/O-link speed and dual 100 Mbps FTE uplink ports. The cited capacity table states 80 I/O units per controller and 40 per link, with project and release limits still applicable. These PCNT03-specific values should not be silently copied to PCNT02 or PCNT05.
The 2024 Honeywell model note says 8C-PCNT03 replaced 8C-PCNT02 and describes compatibility with earlier PC/LX releases. It also specifies paired modules and IOTAs plus a 51305980-836 cable for a redundant arrangement. That statement is not a site-specific commissioning plan or blanket authorization for online replacement. Identify the actual 8C-PCNT03 and additional 51454363-375 markings; the latter is not mapped by the reviewed PDF. Record controller revision, firmware, IOTA, FTE paths, I/O links, application backup and redundancy state. Follow current Honeywell and site procedures, then verify controller diagnostics, both I/O links, FTE communication and every affected process-control function.
The 8C-PCNT03 51454363-375 Honeywell Series 8 C300 Controller may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell 8C-PCNT03 51454363-375 official technical documentation and product links.
This multi-page Honeywell technical document contains the exact model and its technical data. Apply the values to the supplied type number and verify its revision before installation.
Honeywell's May 2024 model table identifies 8C-PCNT03 as the coated Series 8 C300 controller and 8C-TCNTA1 as its coated IOTA. It is a control processor rather than a general network-interface card. The reviewed manufacturer PDF does not map the additional 51454363-375 number used on this listing, so compare the physical unit marking and authoritative parts record before approving an exact-match spare or shipment.
The 2024 PCNT03 column lists two Series 8 I/O links at 750 kbps, up to 80 I/O units per controller and 40 per link, and dual FTE uplink ports. These are documented capacity ceilings, not a guarantee that any system can use every position without project engineering. Verify the actual application load, release, field I/O mapping and FTE configuration against the approved installation before controller replacement.
Honeywell says 8C-PCNT03 replaced 8C-PCNT02 and describes compatibility with earlier PC/LX releases. This is a published model-history and compatibility statement, not an automatic field-swap procedure. Check the installed release and revision, firmware, IOTA and redundancy arrangement with current Honeywell guidance. Preserve the controller application and diagnostics, use approved change control and validate all affected control functions after authorized work.
