Specifications

Electrical Control Interface with AC Crestron CNECI-4A
SIMPL Windows Programming
SIMPL (Symbol Intensive Master Programming Language) is an easy-to-use
programming language that is completely integrated and compatible with all
Crestron system hardware. The objects that are used in SIMPL are called symbols.
SIMPL Windows offers drag and drop functionality in a familiar Windows®
environment.
SIMPL Windows is Crestron Electronics' software for programming Crestron control
systems. It provides a well-designed graphical environment with a number of
workspaces (i.e., windows) in which a programmer can select, configure, program,
test, and monitor a Crestron control system.
The next two subsections describe a sample SIMPL Windows program that utilizes a
CNECI-4A. The first subsection details how the sample program works with a
textual description and block diagram. The second subsection provides a broad
description of how to actually create the SIMPL Windows program.
NOTE: The following descriptions assume that the reader has knowledge of SIMPL
Windows. If not, please refer to the extensive help information provided with the
software.
NOTE: There is no need to recreate this sample SIMPL Windows program. The
program is available from Crestron’s Software Downloads page (Examples Library)
of the Crestron website (www.crestron.com). Search for CNECI-4A.ZIP. This file
contains the necessary files to recreate the following programming sample.
NOTE: The SIMPL Windows program for the CNECI-4A identical to the program
of the older Crestron product, the CNECI-4.
How the Program Works
NOTE: VisionTools Pro (VT Pro) is a Windows compatible software package for
creating Crestron touchpanel screen designs.
The basic CNECI-4A SIMPL program is shown as a block diagram on the next page.
A CT-3000 touchpanel created with VT Pro, is used to control the relays of the
CNECI-4A.
For relay 1, the input1 signal on the clock of the TOGGLE causes the relay to
change states. Relay1-on turns the relay on and relay1-off turns the relay off. The
status of the toggle is fedback to the touchpanel. All four of the CNECI-4A relays
are operated identically with their respective signals.
The all-on and all-off signals, from the touchpanel through their respective
BUFFERS, turn all four of the relays on or off. The AND symbols provide the toggle
status feedback to the touchpanel.
8 • Electrical Control Interface with AC: CNECI-4A Operations Guide - DOC. 8149