2 Ethernet ports (FTE A and FTE B)
2 isolated RS-232 field ports (for PLC serial communication)
1 non isolated RS-232 port (for protocol selection)
1 RS-422 port (for redundant communication)

System capacity and node limitations
The ELCN system takes into account both the node limitations of classical LCN and the scalability of FTE networks in capacity design. The specific restrictions are as follows:
Parameter limitation explanation
The number of ELCN bridge redundancy pairs for each LCN/ELCN must be 1 redundancy pair
The maximum number of nodes per LCN/ELCN (without LCN extenders) is 64 ELCN bridges, not included in the total count
The maximum number of nodes per LCN/ELCN (with LCN extenders) is 96 ELCN bridges, not included in the total count
The maximum number of nodes per coaxial LCN segment is 40 ELCN bridges included in the total count (+2)
The maximum ES-T quantity for each ESVT cluster is 30 * and specific conditions must be met (see below for details)
The maximum number of ES-T+ES-CE per ESVT cluster is 30-
The maximum number of ES-T+ES-CE+ES-F per ESVT cluster is 40-
The maximum number of NG per LCN is 2, with one primary and one backup
The maximum NG quantity per PIN is 63-
Regarding the support conditions for 30 ES-T models (starting from Expert R501.6/TPN R688.3):
The system must not include a C300 controller (i.e. no EHB or ELMM based on C300)
It is necessary to ensure that the load of data owners (such as ENIM, AM) does not exceed the limit
When migrating GUS/US to ES-T, no additional display load should be added
If configuring the ELCN System Management Dashboard, it is recommended that the number of ES-T not exceed 20 to avoid excessive PARSEC load
System software requirements
The software environment of the ELCN system must meet the following minimum version requirements:
Minimum version of software components
Honeywell Expert R501.4 (or higher)
Honeywell TPN/LCN R688.1 (or higher)
ES-T operating system Windows 10 or Windows Server 2016
ESVT/ACE-T/E-APP/HM operating system Windows Server 2016
In addition, the following preparations must be completed before deploying the ELCN bridge:
Configure the basic IP address for Expert ion
Enable BOOTP Server service on ESVT server
Configure NCF clock on ESVT server
Migration Strategy and Functional Features
1. Migration process
Deploy redundant ELCN bridges: Configure a pair of UEAs as bridges to connect the classic LCN coaxial network with the FTE network.
Gradually migrate nodes: Convert each type of node (Windows node, K4LCN node) on the LCN to an ELCN node one by one. Windows nodes can choose virtualization or bare metal upgrade; K4LCN nodes (such as ENIM, AM, EHB, NG) are replaced with UEA hardware or virtual machines.
Final removal of bridge: After all LCN nodes have completed migration, remove the ELCN bridge and its hardware can be reused as spare parts.
2. Functional characteristics
Protocol Transparent Transmission: The ELCN bridge transparently transmits LCN protocol traffic between LCN and FTE, supporting physical address filtering and rate limiting to prevent network congestion.
Node seamless switching: During the migration process, the logical node number of the node remains unchanged, and the LCN data objects created by the original user (such as checkpoints, display objects, CL/AM objects) can run on the new platform without recompiling or refactoring.
Redundant design: ELCN bridges are deployed in the form of redundant pairs, and any bridge can take over the role of the main device; Redundant UEAs are connected through dedicated redundant port cables.
Security control: The UEA platform provides key switch and password protection to prevent unauthorized configuration modifications.

Model and spare parts
1. New system model
Model Description
EH-LCN1001 1 ELCN bridge (including 1 pair of MAUs and 1 rack)
EH-LCN2002 2 ELCN bridges (including 2 pairs of MAUs and 1 rack)
EH-LCN1101 1 ELCN node and 1 rack
EH-LCN2102 2 2 ELCN nodes and 1 rack
EP-LCN001/005/010 ELCN Usage License (Nodes 1, 5, 10)
EP-LCNV01/V05/V10 ELCN Virtual Device Usage License
TC-LNIM10/20 ENIM Single/Redundant Usage License
TC-LHM010 HM Usage License
TC-LAM010/020 AM Single/Redundant Usage License
TC-LHB010 EHB Usage License
TC-LNG010 NG Usage License
TC-LPLG10/20 EPLCG Single/Redundant Usage License
2. Upgrade kit
Model Description
EH-ZLCN11 upgraded to 1 ELCN bridge (including 1 pair of MAUs and 1 rack)
EH-ZLCN21 upgraded to 2 ELCN bridges (including 2 pairs of MAUs and 1 rack)
EH-ZLCN12 upgraded to 1 ELCN node and 1 rack
EH-ZLCN22 upgraded to 2 ELCN nodes and 1 rack
EP-ZLCN01/05/10 Upgrade to ELCN License
EP-ZLCV01/V05/V10 upgraded to ELCN virtual device usage license
3. On site replaceable spare parts
Component part number description
UEA processor module 51454832-100 core computing unit
UEA terminal component (bridge/ENIM/AM/EHB/NG) 51454833-100 provides communication interface
UEA Terminal Component (EPLCG) 51454991-100 provides PLC communication interface
MAU cable (yellow/green) 51307692-100/-200 LCN coaxial signal conversion
UEA 19 inch rack 51454831-100 dual slot mounting bracket
UEA processor key 51307732-200 three position key switch
Summary of Technical Specifications