Overview
Manuals
Kit Components
PMIO to C300
Upgrade Checks
Features:
- Model-specific firmware kit for the low-level multiplexer IOP, within Honeywell's PMIO-to-C300 upgrade offering.
- The cataloged hardware set contains one low-level mux IOP firmware EPROM and one protective boot for 28 pins.
- The existing IOP, field termination hardware and controller are separate from the kit; their compatibility and required release must be checked before the upgrade.
The MC-ZLLMF2 is intended for a specific part of a PMIO modernization project: changing the firmware used by the low-level multiplexer IOP. Honeywell's April 2021 Kits and Enhancements Catalog places it in the PMIO firmware-upgrade section for use of existing I/O with C300 controllers. The kit includes one firmware EPROM and one 28-pin protective boot. Neither the IOP card nor a C300 controller is listed as part of this kit, so purchasing it should not be treated as purchasing a complete input-processing or control assembly.
Before selecting the kit, record the receiving IOP's complete identification and its existing firmware label, then match them to the intended controller and software release. Have the responsible system engineer confirm the upgrade path and the approved installation procedure, including configuration backup and post-upgrade checks. The catalog identifies the kit contents and purpose but does not establish an unrestricted replacement relationship for every low-level input product. It also does not specify the delivered EPROM revision, which must be verified from the supplied kit and the applicable project documentation.
The MC-ZLLMF2 Honeywell LLMUX IOP Firmware Upgrade Kit may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell MC-ZLLMF2 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 catalog lists one low-level mux IOP firmware EPROM and one protective boot for 28 pins. The EPROM entry is on catalog page 53 and the boot entry continues on page 54. Confirm that the quotation supplies the complete kit, with readable component identification and suitable protective packaging; an unlabelled loose device is not enough to establish the required firmware execution.
The documented purpose is to allow compatible existing PMIO to be used with a C300 controller. For this kit the receiving processor is the low-level multiplexer IOP. Confirm the installed processor type and the planned Experion/controller release. The cataloged upgrade purpose does not mean that all PMIO variants, low-level input cards or remote hardened multiplexers use the same kit.
Plan the work using the approved Honeywell instructions for the receiving hardware and the site's controlled maintenance procedure. Record the current firmware and configuration, protect the EPROM against electrostatic damage and verify the supplied marking before installation. After the upgrade, check the IOP's reported status and the affected measurements under the project's commissioning plan. Do not infer a live-change or hot-swap permission from this catalog listing.
