Function Blocks
SPS Setpoint Scheduler Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 353
2/07
SPS Setpoint Scheduler Function Block
Description
The SPS label stands for Master Setpoint Scheduler.
This block is part of the
Setpoint Scheduler category.
Overview
The objective of the Setpoint scheduler is to provide a sequence of multiple setpoint outputs (both analog
and digital) which are referenced to a common time base. Five setpoint schedule block types will be
implemented:
Master Setpoint Scheduler Block (SPS)
Auxiliary Setpoint Block (SPSA)
Digital Event Block (SPEV)
State Switch Block (STSW)
State Flags Block (STFL)
A suite of Setpoint Scheduler blocks is comprised of one master Setpoint Block (required) and optionally,
one Digital Event, one Auxiliary Setpoint, one State Switch, and/or one State Flags block.
SPS Block Function
The Master (SPS) block supports up to 8 ramp or soak outputs operating on a common time base. It accepts
one PV for each setpoint. Setpoint guarantee is provided for the master (SPS) block setpoints with a single
symmetrical value for each setpoint output. You can assign a failsafe value for each setpoint.