Maple Systems Silver HMI504T, Инструкция по установке и эксплуатации

Страница: 195 / 272

15. Once the part is placed onto the window, you can modify the attributes by double-clicking on
the part to display the Numeric Input Object’s Attribute dialog box. You may also resize the
object by single clicking on the object and pulling the border of the object to the appropriate
size. The object’s associated text may be repositioned by clicking on the object, and then by
dragging the text to it’s new position.
The ASCII Data Ob ject
The ASCII Data Object is used to display the character values of a series of PLC registers. The object continuously
reads the PLC registers and displays the corresponding ASCII Data in the format specified. The ASCII Data Object
can read up to 16 PLC registers to display a maximum of 32 characters.
Each 16 bit register stores two ASCII characters. The first ASCII character is stored in the eight least significant
bits of the register. The 16-bit register that you select is the starting point for the ASCII character string. The
example below illustrates how an eight character string is arranged:
4
To create a ASCII Data Object
1. From the
Parts
menu, click
ASCII Data
. Or click the
ASCII Data
icon in the Part1 toolbar.
The Create ASCII Data Object dialog box appears.
2. Use the Description: box to enter a title for the ASCII Data part. A description is not
necessary but does help you identify the purpose of the part.
3. In the Read address frame, select the PLC register or OIT internal memory address that the
part continuously reads. Select No. of words: that the part should read, (1= 2 characters,
Range: 1 to 16).
1010-1001a, Rev 02
Rep re senting Data with Graph ics Ob jects 191