Operating Characteristics - Controller Modes
112 HC900 Hybrid Controller Installation and User Guide Revision 5
9/03
Controller Mode Transitions
Mode changes are controlled primarily by positioning of the MODE switch on the controller module, and
secondarily by selection of mode names on operator interface displays. That is, the Mode switch takes
precedence. In the RUN (Locked) position or in the PROG (Locked) position, selecting a mode name at
the operator interface has no effect on the operational mode. In the RUN/PROG position, the mode may be
changed from any mode to any other mode.
The effects of the Mode switch operator interface selections are described in Table 20. The effects on
controller operation for each mode transition are described in Table 21.
Table 20 - Mode Switch Functions
Mode Name
Position of
Mode
Switch
Mode
Selections at
Operator
Interface
Switch Function
RUN
(Locked)
Left
None (locked in
RUN)
In this position, the Controller is locked in the RUN
mode of operation. Run mode configuration
changes are disabled and mode can not be changed
at any operator interface.
RUN/PROG
Middle PROGRAM
RUN
OFFLINE
In this position, the mode can be changed at any
operator interface using screen selections
PROGRAM, RUN, or OFFLINE.
PROG
(Locked)
Right
None (locked in
Program)
In this position, the Controller is locked in the
PROGRAM mode of operation. Mode can not be
changed at any operator interface.
