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13.5 Ladder Based Screen Navigation
Ladder logic can use several techniques to control screen navigation. Coils can be tied to %D
registers to make them screen coils. These coils have two modes: switch and alarm. If the ladder
program energizes an alarm display coil, the screen associated with this coil is displayed and
overrides the normal user screens. This is designed to show alarm conditions or to display other
ladder-detected events. When the text coil is de-energized, the previous screen that was being
viewed before the alarm is returned.
The switch display coil switches to the associated screen when it is energized. Once it is de-energized
the screen remains until it is switched by the user or ladder.
Figure 13.5
–
Force and Switch Coils in Ladder Programming
There is also a system register that can be used to for control-based screen navigation. %SR1 can be
read to determine the current screen or written to change the current screen.
Refer to the on-line help in
i
³ Config for more information on control-based screen navigation.
Summary of Contents for i3C Lite
Page 1: ......
Page 8: ...Page 8 ...
Page 65: ...Page 65 Figure 9 3 Screen Calibration ...
Page 78: ...Page 78 Figure 11 2 Relay and Digital Output ...
Page 82: ...Page 82 Figure 11 5 Digital Input ...
Page 86: ...Page 86 11 9 RTD Wiring on J3 Connector ...
Page 110: ...Page 110 Figure 13 8 Alarm Configuration in i Config ...
Page 167: ...Page 167 ...