ICP DAS USA ISaGRAF VP-23W7, User Manual

Page: 52 / 192

ISaGRAF WinCE ViewPAC User Manual , V.1.6 , 1/2017 by ICP DAS
4-2
4.1 Writing A Simple ISaGRAF Program
We are going to use ISaGRAF Workbench to write a simple ISaGRAF example program, then download it
to the VP-25W7 controller (with one
I-87055W I/O board in its slot 0) to make it work. If you haven’t
installed “ISaGRAF” & “ICP DAS Utilities for ISaGRAF”, please go back to read chapter 2 .
This example contains one Ladder program.
(This demo program resides at the ISaGRAF WinCE ViewPAC CD-ROM:
\napdos\isagraf\vp-25w7-23w7\demo\ “example1.pia” )
Variables declaration:
Name Type Attribute Description
OUT01 Boolean Output Output 1 in the I-87055W, Modbus network addr = 1
OUT02 Boolean Output Output 2 in the I-87055W, Modbus network addr = 2
K1 Boolean Input Input 1 in the I-87055W, Modbus network addr = 11
K2 Boolean Input Input 2 in the I-87055W, Modbus network addr = 12
T1 Timer Internal
Time Period of blinking, initial value set as T#8s
Modbus network addr = 21
Ladder Logic Program Outline:
Project name – “example1”
Name of your project group
Ladder program name – “LD1”