RS-485 Communication Network
Appendix C:
RS-485 Communication Network
C.1
RS-485 Overview
By using the RS-485 network capability of the detector and additional software, it
is possible to connect up to 32 detectors in an addressable system with 4 wires
only (2 for power and 2 for communication). Using repeaters, the number of
detectors can be much larger (32 detectors for each repeater) up to 247 on the
same 4 wires. When using the RS-485 network, it is possible to read each
detector status (FAULT, WARNING, and ALARM) and to initiate a BIT for each
detector individually.
For more details, contact SPECTREX.
Figure 13: RS-485 Networking