Figure 13 - Controller Module - Honeywell 900U02-0100 User And Installation Manual

Controller Module
C30 and C30S, C50 and C50S, C70 and C70S, C75 and C75S Controllers share the same features, with
exceptions noted.
1 CPU model number (C30 and C30S, C50 and C50S , C70 and C70S, C75 and C75S).
2 Lithium battery (battery tray), which is readily accessible for field replacement. Battery
tray on Controllers C30/C30S, C50/C50S, C70/C70S, and C75/C75S.
3 Serial Interface Ports
For legacy systems, two serial ports, S1 and S2, each configurable as RS-232 or RS-485
provides interfaces to a PC, external modem, Modbus devices or Operator Interfaces.
For new systems, two galvanically isolated RS-485 serial ports, S1 and S2 provide
interfaces to PC using RS-485 to USB cable. External modem or Modbus devices may be
interfaced using RS-485 to RS-232 converter. RS-485 interfaces to PC, Control Stations or
Modbus devices/host.
4 Ethernet LED status
indicators for
communications functions
5 Connection to I/O port of
Scanner Module.
C50/C50S/C70/C70S,
C75/C75S only
6 Second Ethernet (E2) Host
Connection to PC
applications or peer
ControlEdge HC900
controllers.
C70/C70S/C75/C75S only
7 First Ethernet (E1) Host
Connection to PC
applications or peer
ControlEdge HC900
controllers
8 LED status/diagnostic
indicator for serial port S2
(left)
9 LED status/diagnostic
indicator for serial port S1
(right)
10 LED status/diagnostic
indicator for controller
module
11 Mode switch (Pgm,
Run/Pgm, Run). Not present
on C75/C75S; see RSM
Redundant controller rack contains two C75s or C75Ss. Left CPU is designated CPU-A, right CPU is
CPU-B; either CPU can be Lead.
Revision 10 ControlEdge HC900 Process & Safety Controller User and Installation Manual
May 2019
Figure 13 – Controller Module
27