Omron CX-Programmer 9, Руководство по эксплуатации

Страница: 109 / 542

PART 1: CX-Programmer
OMRON CHAPTER 2 – Quick Start Guide
CX-Programmer _Page 29
The following tutorial has been based on a CS1H PLC. The choice of PLC made here affects a number of other
parameters that may need to be set up. For example, the CV-series requires setting up the IO table, and using the
Settings object in the Project hierarchy to establish specific PLC characteristics.
When planning a PLC programming project, various items need to be considered and set up within CX-
Programmer before beginning to lay down program instructions. For example, it is important for CX-
Programmer to know the model and configuration of the PLC to be programmed, so that it can establish the
correct program checking and communications for that PLC. Programming should be targeted at the PLC that is
to be used. It is possible to change the PLC type at any time - the program(s) are then converted. However, since
the conversion may not be perfect, it is best to set the correct PLC type at the beginning.
Before programming, it is recommended that a checklist of the important program aspects be
constructed, including its structure and PLC parameters. To start a new project in CX-
Programmer, follow these steps in addition to the basic procedure outlined in your PLC
programming manual:
Step Include
Determine PLC essential parameters PLC series, PLC type, CPU (where applicable),
communications interface, choice of editor and project type.
Determine allocation of PLC memory Where applicable. For example, C-series PLCs require
working out the balance required between program memory
and expansion data memory.
Determine PLC setup parameters PLC configuration data.
Create appropriate IO Table List all related IO devices and addresses. Some C-series
PLCs do not support this function.
Decide how to input and edit the program CX-Programmer offers two languages: ladder and mnemonic.
A mixture may be used.