GE Industrial Solutions CPS3200U - Manual (Page 35)

CPS3200U Upstream System – 23” Product Manual CPS3200U
CC848779826 r09 December 2013 35
Step Action
14. Check the other end of the fan shelf to make sure the serial bus reaches all of the shelves in the
system. RS-485 signals are Daisy Chained from all the elements in the system. The signal from
equipment located in the frame above the controller typically comes through the RJ45 jack on
the left. The jack shown here on the right will typically accept information from equipment
mounted below the fan shelf containing the controller:
Figure 33 Fan Shelf RS-485 Jacks
Figure 34 Signal Cables - System
to Shelf above, if present
to Shelf below, if present