Fisher DPR900 - Remote;Local Setpoint Switching; Setpoint Tracking

5.7.6
Configuration 5-31
When Option 2 is configured and the Fl button is pressed, the
controller switches to the RSP value. When Option 3 is configured
and the R button is pressed, the controller uses the ESP value.
Function FCODE Option
No Default Selected
VAH3
WUEZ
External
111 Disabled
0 0
WL
Remote/Local switching via DII 1
Switching Remote/Local switching via Dl2 2
When remote switching via discrete inputs is configured and the
signal line is inactive, the controller switches to LSP control. When the
discrete input returns to the active state, the controller reverts to using
the RSP value.
The discrete inputs are only able to switch the
controller from remote to local mode. The R button
is the only way to return the controller to remote
from local mode.
Setpoint Tracking
The user may configure the ESP to track the RSP via FCODE 140,
Option 2. Switching may be accomplished manually or automatically
via an external discrete signal. The tracking function, however is
enabled only with a manually entered command.
Setpoint tracking allows the user to configure the LSP to track the PV
when the controller is in the Manual mode, provided the M button has
been pushed or the controller has been switched to manual via an
external computer. It does not track if the controller has been switched
via a discrete input.
May 1991
lJM6.1:DPR900:9102