Allen-Bradley Studio 5000 Logix Emulate Programming Manual

Chapter 1
Design a sequential function chart
36 Rockwell Automation Publication 1756-PM006I-EN-P - February 2018
Each step of the SFC includes a millisecond timer that runs whenever the step is
active. Use the timer to for these situations.
• Signal when the step has run for the required time and the SFC should go to
the next step.
• Signal when the step has run too long and the SFC should go to an error
step.
The following shows the action of a timer and associated bits of a step.
Description
Step becomes active.
X bit turns on.
Timer (T) begins to increment.
Timer reaches the Preset (PRE) value of the step.
DN bit turns on.
Timer continues to increment.
Step becomes inactive.
X bit turns off.
Timer retains its value.
DN remains on.
Step becomes active.
X bit turns on.
Timer clears and then begins to increment.
DN bit turns off.
Transition after a specified
time

Allen-Bradley Studio 5000 Logix Emulate Specifications

General

Type	Emulation Software
Supported Platforms	PC
Operating System	Windows
Compatible Controllers	ControlLogix 5570, ControlLogix 5580, CompactLogix 5370, CompactLogix 5480
Integration	Integrated with Studio 5000 environment
Works with Studio 5000 Logix Designer	Yes
Programming Languages	Ladder Logic, Function Block Diagram, Structured Text, Sequential Function Chart
Communication Protocols	EtherNet/IP
Functionality	Controller Emulation
Purpose	Testing and Debugging
Use Case	Program development, testing, training, and troubleshooting without physical PLC hardware