Table 25 - Mode Switch Functions - Honeywell 900U02-0100 User And Installation Manual

Mode Name Mode Selections at
Operator Interface
RUN None (locked in
(Locked) RUN)
RUN/PROG PROGRAM
RUN
OFFLINE
PROG None (locked in
(Locked) Program)
Failover N/A
(RSM only)
Revision 10 ControlEdge HC900 Process & Safety Controller User and Installation Manual
May 2019
Table 25 – Mode Switch Functions
In this position, the Controller is locked in the RUN mode of
operation. Run mode configuration changes are disabled and mode
cannot be changed at any operator interface. SIL application must
operate in this position. SIL requirements may not occur in other
operational modes. This RUN-locked mode is the Safety mode for
Safety controllers and the proper normal operational mode for All
controllers.
In this position, the mode can be changed at any operator interface
using screen selections PROGRAM, RUN, or OFFLINE. The
Run/Program mode should be used only when changes are
anticipated. The Run-Locked mode is the preferred operational
mode to prevent any unintentional changes.
In this position, the Controller is locked in the PROGRAM mode of
operation. Mode cannot be changed at any operator interface.
While in PROG position the S1 serial port is set to Honeywell ELN
protocol. This temporarily overrides the configured settings for S1
port. With your PC's serial com port connected to S1, use Designer
Software's Utilities to view any setting of any controller port (such as
network IP address) and change if needed. Refer to Designer
Software documentation for details. Placing the Run/Program switch
in RUN or RUN/PROG mode returns S1 to its configured protocol
and settings.
Transfers all primary tasks to the Reserve Controller, establishing
this controller as the new Lead. Does not affect controller mode. Turn
key to Failover and hold it there until both Reserve lights are on, then
release key.
Switch Function
175