Allen-Bradley SoftLogix 5800, User Manual

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Rockwell Automation Publication 1789-UM002K-EN-P - January 2015 93
Chapter
5
Configure and Use Simulated I/O
This chapter explains how to use SIM modules with a SoftLogix controller.
The 1789-SIM module is a software-only module that comes with the SoftLogix
controller; no hardware is required. You can put as many SIM modules as you
have available slots, on your system, according to your activation level.
The 1789-SIM module lets you change inputs and monitor outputs of your
application by toggling input bits and monitoring output bits on the 1789-SIM
module. You use this module to test logic without having physical I/O attached
to the system.
Configure Your System for a
1789-SIM Module For the SoftLogix controller to simulate local I/O, you need the following:
•
A 1789-SIM module (comes with the SoftLogix 5800 controller)
•
Logix Designer application to configure the 1789-SIM module
You are limited by the activation level of your SoftLogix controller as to
how many modules you can install.
Even though the 1789-SIM module is a software-based module, each module you
create uses communication resources. If you are controlling actual I/O and
simulating I/O, the 1789-SIM module in your application use communication
resources that could impact control performance. If this occurs, increase the RPI
of your 1789-SIM module. This maintains control performance because the
greater RPI of the 1789-SIM module lessens the load on the SoftLogix system.
Topic Page
Configure Your System for a 1789-SIM Module 93
Map I/O Data to the 1789-SIM Module 100
Toggle Inputs and Monitor Outputs 101
Example: Move Application Data into the 1789-SIM Tags 103