Plc Controlled Printing - KEP MMI-1500 Installation & Operation Manual

7.10.3 PLC Controlled Printing

There are two ways of printing by using a PLC data point. The Screen hardcopy control uses a bit in the PLC to
trigger the printout and the Report printout control uses a word. If internal Local or Retentive data points are used,
then the operator can trigger printing without the PLC getting involved.
7.10.3.1 Printing the currently active screen
This is used to dump the screen to the printer as a bitmap graphic. The Screen hardcopy PLC control monitors the
specified Read address. When the trigger bit turns ON, the unit prints the active base window. Once the printout is
done, the unit turns the controlling bit OFF. See the Object Reference Guide for more details about PLC
Controls.
7.10.3.2 Printing a window in the background
Windows can be printed in the background while touchscreen operations are being carried out. Use the Report
printout PLC control. This control prints the window number designated by its Read address. After the window is
printed, the Read address is set to 0. For example, suppose that the Read address is D100. When the value of
D100 is equal to 20, the unit prints out window 20 in the background. When the unit is finished printing, the zero is
written to address D100.
Note: System Register LW9054 specifies what is printed out in the report. Set this register before triggering
printouts.
Report printout options
0: All Text, Meters & Trends in the window
1: All Text, Meters, Trends & Shapes but no pattern fills
2: All Text, Meters, Trends & Bitmaps
3: All Text, Meters, Trends, Bitmaps, & Shapes but no pattern fills
4: All screen objects.
Note: System Register LW9055 acts as an offset for the Report printout control. Set this register before
triggering printouts.
Example: A PLC Control / Report printout uses D100. If (LW9055) = 6, and D100 = 24 then the unit prints out
window 30. After printing, the unit writes back 0 to D100.
7.10.4 Printing Events
The Event Logger control allows events to be printed. This is specified whenever an event is being defined. The
printing can occur when the Event is triggered or when the event returns to its normal state. The System
Parameters|General Tab settings determine what is printed along with the Event message. The information selected
is printed before the message.
Information Item
Print sequence number
Print time tag
Print date tag
Extended time format (D:H:M)
Extended date format (Y:M:D)
Note: These settings are not the same as the settings in the Event Display Part. Those settings determine what is
displayed on the screen, not what is sent to the printer.
Description
The number of the event. Event numbering starts at 0.
The time that the print was triggered. (Hours:Minutes:Seconds)
The date of the printing. (Month:Day)
Change the time format in the time tag to Days:Hours:Minutes.
Change the date format in the date tag to Year:Month:Day.
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