Mode Transition Operations - Honeywell DCP551 Mark ΙΙ User Manual

Mode transition operations

RUN
HOLD
RESET
ADV
FAST
AUTO
MANUAL
Operation end
Mode transitions are performed using the following operations.
Although "Operation end" is not an operation, it is described here as a factor in mode
transitions.
Switches from the READY, HOLD, FAST and READY FAST modes to the RUN
mode. To go from the READY mode or READY FAST to the RUN mode using keys,
external switches or transmission, the DCP551 must be in basic display status.
Switches from the RUN and FAST modes to the HOLD mode. During constant value
control the HOLD mode cannot be invoked.
Switches from the RUN, HOLD, FAST, END and READY FAST modes to the READY
mode.
In program operation, the reset involves returning the program to the first segment.
Brings the program forward by one segment in the READY, RUN, HOLD, FAST and
READY FAST modes. ADV (advance) operation is not available in the constant value
control mode.
The FAST mode is invoked from the RUN, HOLD, READY and READY FAST modes.
During constant value control the FAST mode cannot be invoked.
Switches from the MANUAL mode to AUTO mode.
Switches from the AUTO mode to MANUAL mode. The basic display status changes as
follows during this transition.
• A controller function displays PV and output value (%).
• The programmer function displays PV and SP.
Switching from AUTO to MANUAL using external switches or transmission invokes
the basic display status even when the parameter setting status or programmer setting
status are in use.
Operation ends when all progress of program settings including cycle and pattern links
reach the end in the RUN, FAST and READY FAST program operation modes or dur-
ing an ADV operation. By making a setup selection, it is possible to set READY or
END as the state of the controller when the program reaches its end.
Note, however, that when an operation ends in the READY FAST mode, it always ends
in the READY mode. In constant value control mode, operation end is not available.
Chapter 5. FUNCTIONS
5-27