The following figure is an example of a Metasys network using the ZFR1800 Series Wireless Field Bus system.
|
Interaction between Callouts |
Protocol |
Communication Direction |
|
|---|---|---|---|
|
1 |
4 |
HTTP |
Unidirectional |
|
1 |
2 |
BACnet MS/TP |
Bidirectional |
|
2 |
3 |
ZigBee Wireless Network (802.15.4) |
Bidirectional (2.4 GHz ISM bands, 802.11 b/g/n, 11/22/54 Mbps) |
|
3 |
5 |
ZigBee Wireless Network (802.15.4) |
Bidirectional (2.4 GHz ISM bands, 802.11 b/g/n, 11/22/54 Mbps) |
The ZFR1800 Series Wireless Field Bus System provides a wireless platform for Metasys field controllers using Johnson Controls Metasys BACnet protocol. The system consists of at least one ZFR1810 Wireless Field Bus Coordinator, connected to a network engine. It also has one or more ZFR1811 Wireless Field Bus Routers, each connected to any Metasys BACnet FEC 16, FEC26, FAC26, or VMA16 Series Controller. And lastly, multiple WRZ Series Wireless Room Temperature Sensors (WRZ-TTx) in the system communicate with the routers.
As with the TEC Wireless system, the ZFR1800 Wireless Field Bus system uses DSSS wireless technology and operates on the 2.4 GHz ISM band. The system also meets the IEEE 802.15.4 standard for low power, low duty-cycle wireless transmitting systems and are compatible with wireless mesh networks compliant with the ZigBee standard. For more details on the ZFR1800 Series Wireless system, refer to the ZFR1800 Series Wireless Field Bus System Technical Bulletin (LIT-12011295).