Mitsubishi FX2-16E series, User Manual

Page: 434 / 520

426
FX
3U
Series Programmable Controllers
User’s Manual - Hardware Edition
19 FX3U-7DM (Display Module)
19.22 Display Screen Protect Function
19.22.4 System information - display screen protect function
1. System signal 1
2. System signal 2
System signal 2 is unrelated to this function.
19.22.5 Program example (screen protect function setting)
In this program example, the display screen protect function is set to "level 2". Use this program as a
reference when other level settings are specified.
In this program example, system information is assigned from D50 to D90 and from M50 to M56.
19.22.6 Pointers for using the display screen protect function
The display screen protect function settings should be specified in a sequence program.
• The protect function is enabled by using the display module’s "monitor/test function" to change the system
information’s (system signal 1) "D +8" current value to "1" or "2".
• Once the setting is made, it cannot be canceled from the display module.
• To cancel the setting, use the programming tool to change the system information’s (system signal 1)
"D +8" current value to a value other than "1" and "2".
If the system information’s (system signal 1) "D +8" is set in a general purpose data register, however,
the display screen protect function can be canceled by turning the power off, then on again.
System
Information
Setting
Content
(Level)
Function Restriction Summary
D +8
1
All functions except the "user message display"
and "top screen (time display)" functions are disabled.
2
The following functions are disabled: "monitor/test’s ’test’ function", "device all-clear",
"time change", "contrast setting", "memory cassette transfer",
and "menu display language setting".
Other
values
All functions are enabled.
Initial pulse
END
MOV K50 D8300
MOV K50 D8301
M8002
System information (system No.1) is set at D50 to D90.
System information (system No.2) is set at M50 to
M56.
MOV K2 D58 Sets the display screen protect function to "level 2".