GT10/GT30
7.1
Switching Screens
116
7.1
Switching Screens
There are three ways to switch screens registered in the GT main unit.
7.1.1
Switching the Screen from the PLC
GT main unit screens can be switched from the PLC ladder program, by writing the
number of the screen to be displayed in hexadecimal format to the initial word of the
word device in the basic communication area.
At the same time that the screen is switched, the GT main unit writes the number of the
screen to which the display was switched in the first to third words of the basic
communication area, in hexadecimal format.
How communication is carried out between the GT main unit and the PLC (screen
switching)
GT main unit
PLC
Basic communication area / word device
First word (specifies screen no. from PLC)
Second word (usage prohibited area)
Third word (no. of screen currently displayed)
Internal PLC device
Ongoing
communication
How screens are switched
GT main unit
PLC
GT main unit
PLC
Screen No. 1
Screen No. 2
When Screen No. 2
is specified by the
PLC
the screen
switches to
No. 2
and the PLC is noti-
fied that the screen
has been switched.
Basic communication area / word device
First word, HEX 2
Second word (usage prohibited area)
Third word, HEX 1
Basic communication area / word device
First word, HEX 2
Second word (usage prohibited area)
Third word, HEX 2
Example of ladder programs
Following are basic screen display programs in FPWIN Pro and FPWIN GR.
When the PLC directs the display unit to switch screens, indicate as shown in the
programs both:
the screen to be displayed using a hexadecimal number
the destination of the screen as defined in the basic
communication area
Содержание GT10
Страница 9: ...Table of Contents GT10 GT30 viii...
Страница 10: ...ix Part I GT10 GT30 Main Unit...
Страница 23: ...Safety Precautions GT10 GT30 xxii...
Страница 24: ...Chapter 1 Specifications...
Страница 37: ...GT10 GT30 1 5 Dimensions 14...
Страница 38: ...Chapter 2 Installation and Wiring...
Страница 48: ...Chapter 3 Setup...
Страница 63: ...GT10 GT30 3 4 Setting the Basic Communication Area GT30 and PLC 40...
Страница 64: ...Chapter 4 Connecting and Communicating with the PLC...
Страница 84: ...GT10 GT30 4 10 Through Function 61 FP Programmer II on an ongoing basis GT10 GT30 FP Programmer II 25V DC max...
Страница 94: ...Chapter 5 GT10 Configuration Settings...
Страница 115: ...GT10 GT30 5 3 Entering Configuration Settings from the GT10 92...
Страница 116: ...Chapter 6 GT30 Configuration Settings...
Страница 138: ...Chapter 7 How the Various Functions Are Used...
Страница 149: ...GT10 GT30 7 3 GT30 Bit Device Functions 126...
Страница 150: ...Chapter 8 Servicing and Maintenance...
Страница 157: ...GT10 GT30 8 5 Replacing the Backlight GT30 Only 134...
Страница 158: ...Chapter 9 Troubleshooting...
Страница 170: ...147 Matsushita Electric Works Europe AG Part II Screen Creation Tool Terminal GTWIN...
Страница 174: ...Chapter 10 Preparing GTWIN...
Страница 187: ...GT10 GT30 10 4 Procedures for Using GTWIN 164...
Страница 188: ...Appendix A Code Tables...
Страница 191: ...GT10 GT30 A 2 ASCII Code Table 168...