Stfl Function Block - Honeywell UMC800 Reference Manual

Function Blocks

2.64 STFL Function Block

Description
The STFLlabel stands for the Setpoint Scheduler State Flags. This block is part of the Setpoint Scheduler
category. It looks like this graphically on the Control Builder.
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.
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.
Block Order (Read Only)
You can change the assigned execution order number by selecting "Execution Order" in the "Configure"
menu and arrange the order to suit your control strategy.
Example
Figure 2-68 shows a Function Block Diagram (Setpoint Scheduler Suite) using a STFL function block.
198 Function Block Reference Guide
(See Figure 2-68)
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