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FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
19 FX3U-7DM (Display Module)
19.20 Operation Button ON/OFF Information
19.20 Operation Button ON/OFF Information
Operation button ON/OFF information can be monitored at the system information (system signal 2) "MUU
to MUU+3" while the PLC is running. Various applications of this function are described below.
→ Refer to Section 19.18 for system information setting.
19.20.1 Various applications
1. Operation button function checks
The programming tool can be used to monitor the system information’s (system signal 2) "operation button
ON/OFF information", to verify that operation buttons are functioning properly.
2. User-registered device changes
The system information’s (system signal 2) "display screen information" and "operation button ON/OFF
information" can be used together to change and display 4 or more user-registered devices.
→ Refer to Section 19.19 for the user-registered device setting procedure.
→ Refer to Subsection 19.19.3 to 19.19.5 for program examples.
3. User message changes
The system information’s (system signal 2) "display screen information" and "user message display
command", and "operation button ON/OFF information" can be used together while a user message is
displayed in order to change (by [+] / [-] button operation) the user message that the program displays.
→ Refer to Section 19.23 user message display function.
→ Refer to Subsection 19.23.4 to 19.23.6 for program examples.
19.20.2 System information - operation button ON/OFF information
1. System signal 1
System signal 1 has no system information related to this function.
2. System signal 2
System
Information
Status Description
MUU
ON [OK] button is pressed.
OFF [OK] button is not pressed.
MUU+1
ON [ESC] button is pressed.
OFF [ESC] button is not pressed.
MUU+2
ON [-] button is pressed.
OFF [-] button is not pressed.
MUU+3
ON [+] button is pressed.
OFF [+] button is not pressed.
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