Watlow LogicPro Manual de usuario descargar pdf (Pagina 220)

Chapter 12: Function Blocks LogicPro User’s Guide

204 Watlow Anafaze Doc.# 28002-00 Rev 3.00

Database

The Database I/O Driver is used to examine or set values for any

closed-loop control parameter not supported by one of the other

drivers. The specific parameter value is addressed with the

parameter number and its database offset.

To associate a variable with a value in the database:

1. Open the Add Program/Resource Variable dialog box.

2. Enter a unique variable Name.

3. Select INT or BOOL from the Type list.

4. Select Input or Output by clicking the corresponding check

box.

5. Select Database from the IO Driver list.

6. Select WORD or BIT from the IO Size list.

7. Enter the IO Physical Address. The address is:

#.D # is the parameter number

D is the database offset

8. Click [OK].

Channel Parameter Example

To create a variable named Mode_17 that sets the control mode for

channel 17, set the options in the Add Program/Resource

Variable

dialog box as illustrated below. The parameter number

for control mode is 1. Control mode is a channel parameter, so the

database offset is the channel number, 17.

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Watlow LogicPro Manual de usuario Pagina 220