Honeywell Experion PKS Series A, Руководство пользователя, Страница: 385 / 560

10. Appendix A
10.2. Standard Function Blocks
R400 Experion PKS Series A Fieldbus Interface Module User's Guide 385
July 2010 Honeywell
Mode Abbreviation Operation Effect
When status is no path to the final output
element, control blocks must initialize to
provide for bumpless transfer, when the
condition clears. The Set Point may be
maintained or initialized to the Process
Variable parameter value.
Local Override LO Applies to control and output blocks that
support a track input parameter. Also,
manufacturers may provide a local lockout
switch on the device to enable the Local
Override mode. The block output is being set
to track the value of the track input
parameter. The algorithm must initialize to
avoid a bump, when the mode switches back
to the target mode. The Set Point may be
maintained or initialized to the Process
Variable parameter value.
Manual Man The block is not being calculated, although it
may be limited. The operator directly sets it
through an interface device. The algorithm
must initialize to avoid a bump, when the
mode switches. The Set Point may be
maintained, initialized to the Process
Variable parameter value, or initialized to the
Set Point value associated with the previous
(retained) target mode. .
Automatic Auto The block's normal algorithm uses a local
Set Point value to determine the primary
output. An operator may set the value of the
Set Point through an interface device.
Cascade Cas The block's normal algorithm uses a Set
Point value fed through the Cascade input
parameter from another block to determine
the primary output value.
Remote-Cascade RCas The block's Set Point is being set by a
Control Application running on an interface
device through the remote-cascade in
parameter. The block's normal algorithm
uses this Set Point to determine the primary
output value. The block maintains a remote-
cascade out parameter to support