© 2022 Brivo Systems LLC. All rights reserved. PUB-Brivo ACS6100 Installation Manual
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Brivo ACS6100 Installation Manual
Wiring OSDP Readers and Allegion Transceivers
IMPORTANT NOTE: The B-ACS6000-MBS control panel cannot use OSDP readers.
NOTE: Ensure that when wiring the RS-485 bus that BOTH ENDS of the RS-485 bus are terminated using a 120Ω
resistor.
NOTE: The B-ACS6000-MBE control panel has an RS-485 termination switch built in for the Door 1 and Door
2 nodes. If the B-ACS6000-MBE control panel is being used as one end of the RS-485 bus, be sure to put the
appropriate switch in the Enabled position.
NOTE: Brivo recommends using Half-Duplex mode for OSDP readers. Most commercially available OSDP readers
operate in Half-Duplex mode.
NOTE: When wiring OSDP readers, wire only a single OSDP reader per door node.
NOTE: When wiring the RS-485 bus, use only twisted pair shielded wire.
NOTE: The RS-485 bus uses a series bus topology, not a star topology. Failure to wire the RS-485 bus properly will
result in communication failure between devices.
NOTE: Any device at the end of the RS-485 bus needs to be terminated using a 120Ω resistor. This resistor may be
built into the device or may need to be added externally.
Figure 19 – Typical Half Duplex RS-485 Wiring Diagram for OSDP Reader
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