Fisher DPR900 User Manual page 52

4.2.1
FCODE 24,25 and 26 must be set for the
appropriate measuring ranges before any other
FCODE is selected. This is because many other
parameters use the measuring range limits as
reference. If the measuring range is altered,
related limits and alarms are automatically
adjusted to suit the new range. (This does not
apply to cases where the DPRlOO Temperature
Input Module is used since its measuring range is
set automatically with FCODE 118.
Tuning parameter setting and configuration function selection take
place in the configuration mode.
Press the PROG button to enter the configuration mode. Pressing the
PROG button illuminates the red light in the button and the red
STORE and SET lights. These lights indicate that the secondary
functions of the R and TUNE buttons are active.
If the controller is set for authorization check (FCODE 139), the
configuration values may be read only when the STORE light is Off
Most configurable controller functions and tuning parameters can be
changed while the controller is operating. For safety, vital controller
functions cannot be altered during operation. The controller must be
in the Manual mode to change any functions with FCODE's greater
than 100. When changes are made during configuration, either the
SET or STORE light flashes, indicating the appropriate action to be
taken.
A complete list of FCODE's is provided in Section 5.
Tuning Parameter/Configuration Changes
The authorization check can be temporarily
disabled (without changing FCODE 139) by
pressing the R button immediately after pressing
the PROG button in Step 1.
UM6.1:DPf?900:9102
May 1991