Screen overview
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MN05013005E
327
Example program 4 – activating message texts with a
default text
The program consists of two screens containing message
texts. The screens are activated automatically in succession
in the display. This program is an extension of the program
Message_Text_03. The extension consists of the display of a
default text in screen 2 when the counter takes on values that
are not assigned to any messages. The circuit diagram uses
six on-delayed timing relays T01 to T06 that activate outputs
Q1 to Q4 and LE03 in succession after an elapsed time. This
operation is run in a continuous loop since timing relay T06
resets all timing relays after a set time. Counter make contacts
(C01ZE) in the circuit diagram are switched directly before
outputs Q1 to Q4 and LE03 so that the outputs are only active
if screen 1 is active when counter C01 has the value 0.
The screen activation is executed via counter C01. This has
the value 4 as the upper setpoint SH. This therefore generates
the counter values 0, 1, 2, 3 and 4. The counter is activated
with every reset of timing relays T01 to T06. The counter value
0 activates screen 1 and counter value 1 screen 2. Screen 2
remains activated when the counter value is 2, 3 or 4, and
counter value 2 and 3 cause the default text to be displayed
as there are no message text assigned to these values. The
counter value 4 causes the message text RESTART to be
displayed in screen 2. If the counter C01 reaches its upper
setpoint with this value, this starts the on-delayed timing relay
T08. This then resets the counter C01 to 0 after the set time
of 0.8 s has elapsed. This loop is repeated continuously.
Examples Folder:
Files can be found on the EZSoft CD-ROM
in the Examples folder.
Program:
Message_Text_04
