Screen overview
313
1SVC 440 795 M1100
Example program 4 – Message texts with default text
The program consists of two screens containing message
texts. The screen activation automatically shows the screens
on the display in succession. This program is an extension of
the program
Messagetext_Prog_03.e60. This consists
of the display of a default text in screen 2 when the counter
takes on values for which no messages have been assigned.
The circuit diagram uses six on-delayed timing relays T01 to
T06 that activate outputs Q1 to Q4 as well as LE 03 in
succession after the elapsed time. The process is carried out
in a continuous loop since the timing relay T06 resets all
timing relays after the set time. In the circuit diagram, N/O
contacts (C01ZE) of the counter are switched directly before
the outputs Q1 to Q4 as well as before LE 03 so that the
outputs are only active with the display of screen 1 when
counter C01 is 0.
The screen activation is implemented via counter C01. This
has the value 4 as the upper set value SH. This produces
counter values 0, 1, 2, 3 and 4. The counter value is reset
when timing relays T01 to T06 are reset. Counter value 0
activates screen 1, counter value 1 activates screen 2. Screen
2 stays active for counter value 2 to 4, with counter value 2
and 3 assigned a default text as there are no message texts
assigned to these counter values. Counter value 4 shows the
message text RESTART in screen 2. This value also reaches
the upper set value which activates the on-delayed timing
relay T08. This resets the counter C01 back to 0 after the set
time of 0.8 s. The loop is continued.
Standard path: C:\Program files\CL-SOFT\Samples\
Program:
Messagetext_Prog_04.e60
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