EAGLE CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS
Connecting RS485-2 to BACnet MS/TP Buses
RS485-2 (+) RS485-2 (-)
Always power the EAGLE and connected BACnet MS/TP modules with separate transformers.
N = max. 30 modules.
For "L," see section "RS485 Standard" on pg. 8.
If any devices are not electrically isolated, signal ground connection is recommended. See section "RS485 Standard"
on pg. 8.
Between devices equipped with non-isolated RS485 bus interfaces, potential differences of max. ±7 V are allowed.
Further, this bus should not extend beyond a single building.
Termination resistors must be inserted directly into the terminals of the individual BACnet MS/TP modules.
Fig. 34. Connection of RS485-2 to a BACnet MS/TP Bus
*Connect, if available.