Understanding the architecture of Johnson Controls Metasys Network Automation Engines (NAE) and Network Integration Engines (NIE) is fundamental to designing, programming, and maintaining Metasys building automation systems.
NAE55
NAE85
SNE Series
| Feature | NAE | NIE |
|---|---|---|
| Control Logic | Yes | No |
| Integration Only | No | Yes |
| Programming | Full | Limited |
| Cost | Higher | Lower |
| Use Case | Primary controller | Protocol gateway |
Ethernet Port
N2 Bus
SA Bus
Hardware Objects
Application Objects
Logic Objects
NAE supports BACnet:
Legacy JCI protocol:
NAE Network Requirements:
- Static IP or DHCP reservation
- Ports: 80 (HTTP), 443 (HTTPS)
- BACnet: 47808 (UDP)
- FTP: 21 (file transfer)
Access NAE via browser:
https://<NAE-IP-Address>/
System Configuration Tool:
| NAE Model | Points | Devices | Trunks |
|---|---|---|---|
| NAE55 | 30,000 | 150 | 4 N2 |
| NAE85 | Unlimited | 500+ | 8+ |
Understanding NAE architecture helps you design better systems and troubleshoot faster. Take time to understand how the pieces fit together.