Issue
How many controllers can be connected to an ASD bus before a repeater is required?
Environment
Global controller with an ASD bus connected (GCM, UNC, ENC, LNC-100, SIM-CCN, SIM-MTECH, SIM-TRANE, SIM-YORK)
ASD controller (LIM-1,MicroFlo II, MicroZone II, MN-ASDI integrator, PEM-1)
Cause
Requirements for ASD bus installation.
Resolution
A maximum of 32 nodes are allowed for each ASD bus segment.
Each controller and repeater count as one node, so a bus segment with a master (GCM, UNC, etc.) and a repeater can have 30 other nodes on it ( MZII, MN-ASDI, etc.)
For details, See the Network 8000 Hardware Installation Practices manual, F-23061-1, "Network & Communication Wiring", "Repeaters - RS-485".