Honeywell HC900 - Redundant Components; Figure 5 - Redundant Configuration with Multiple I;O Racks

20 HC900 Process & Safety Controller User and Installation Manual Revision 6
21 April 2017
10
Serial Interface
Cable
For legacy system, Null modem cable, up to 50’
(15.24m) (PC modem cable if used with Modems.)
For new system, RS-485 to USB converter connects
galvanically isolated RS-485 port to USB port.
Third-party suppliers or
Honeywell
Redundant components
Figure 5 – Redundant Configuration with multiple I/O racks
CAUTION