Database – Watlow LogicPro User Manual
Page 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.