Honeywell HC900 Reference Guide

Function Blocks
STFL Setpoint Scheduler Stage Flags Function Block
Revision 11 HC900 Hybrid Control Designer Function Block Reference Guide 371
2/07
STFL Setpoint Scheduler Stage Flags Function Block
Description
The STFL label stands for the Setpoint Scheduler State Flags.
This block is part of the
Setpoint Scheduler category.
Function
Connects to Master block (SPS) via dedicated connection and provides logic 1(ON) state digital outputs for
Scheduler modes. The State Flags block accepts the encoded master block state as an input and produces
digital outputs corresponding to the current value of STFL.
Inputs
STFL
= this input is connected to the STFL output of the SPS function block. (See HFigure 101.)
Outputs
GHOLD
= ON if state = 1.0, else OFF
READY = ON if state = 2.0, else OFF
HOLD = ON if state = 4.0, else OFF
RUN = ON if state = 8.0, else OFF
STOP = ON if state = 16.0, else OFF
Block properties
Double click on the function block to access the function block properties dialog box.
Example
HFigure 101 shows a Function Block Diagram (Setpoint Scheduler Suite) using a STFL function block.

Honeywell HC900 Specifications

General

Series	HC900
Redundancy	Optional
Programming Language	Function Block Diagram, Ladder Logic, Structured Text
Inputs	Analog, Digital
Outputs	Analog, Digital, Relay
Display	Optional
Control	PID, Advanced Control
Power Supply	24V DC or 100-240V AC
Storage Temperature	-40°C to 85°C
Humidity	5% to 95% non-condensing
Communication Protocols	Modbus, Ethernet