Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 302)

Publication 1760-UM002B-EN-P - March 2005
5-34 Visualization with Pico GFX-70
Message Text Example Program 3 – Message Text with a Display Change
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_manual screen change.e60. The
extension consists of two messages being contained in one message text
element in screen 2, which are also toggled automatically. A display change is
also executed in one message text. 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. The make
contacts (C01ZE) of the counter in the circuit diagram are switched directly
before the outputs Q1 to Q4 as well as before LE 3. The outputs are only
meant to be active with screen 1, i.e. when the counter has the value 0.
The screens are activated via counter C01. This has the value 2 as the upper
setpoint SH, thus providing the counter values 0, 1 and 2. Counter value 0
activates screen 1, counter value 1 activates the first message text in screen 2
and counter value 2 the second message text in screen 2. When the timing
relays T01 to T06 are reset, the counter receives a pulse and is incremented by
one value. If the counter C01 reaches its upper setpoint with the second pass,
this starts the on-delayed timing relay T08. This then resets the counter C01 to
0 after the set time has elapsed (0.8 s). This loop is repeated continuously.
Standard path: C:\Program Files\PicoSoft 6 Pro\samples\
Program: Two messages in screen_automatic screen change.e60
Screen 1 - The first screen contains four message text elements. These are
activated in succession via the outputs Q1 to Q4 and appear in the display.
Screen 2 - The second screen contains a message text element with two
message texts. The message texts are activated via counter values 1 and 2. The
first resetting of timing relays T01 to T06 by T06 also activates counter C01
which then reaches the value 1. The Error message text is then displayed. This
flashes since Flashing was set on the Display change tab and with function
block parameter FB (counter value <= 1). RESTART is displayed if the
counter value of C01 is 2.
Figure 5.39 Message text as status display
Start Machine 1
Start Machine 2
Start Machine 3
Start Machine 4
Error RESTART