Lighting Of Operation Indicator Leds - Mitsubishi A953GOT-SBD-M3-H Hardware Manual

A953 HANDY GOT
3.2.2

Lighting of operation indicator LEDs

Each of the four operation switches SW1 to SW4 is equipped with a green LED which indicates
the pressing status of the switch.
Each LED is assigned to the bit 0 to the bit 3 of a word device. When the bit value is "1", the
corresponding LED is lit. When the bit value is "0", the corresponding LED is extinguished.
1) Assigning a device which controls the LEDs
Assign a device to control the LEDs using the screen creation software. When "System
Information" of "Read device" in "Common" is set to 2 points, the set "Read device" +1 (the
output information storage area of the external I/O function) is assigned to LED control.
The figure below shows the relationship between each bit in the output information storage
area and the LEDs. When the bit value is "1", the corresponding LED is lit. When the bit
value is "0", the corresponding LED is extinguished.
Output information storage area of the external I/O function
b15 b14
For example, when "Read device" of "System Information" is set to "D100", the value of
each bit of the D101 is reflected on lighting/extinction of an LED.
b0 of D101 → LED of SW1
b1 of D101 → LED of SW2
b2 of D101 → LED of SW3
b3 of D101 → LED of SW4
2) Setting in the screen creation software
Set "Read Device" in "System Information" as follows according to the screen creation
software.
- GT Designer2 (SW D5C-
GTD2-E)
a) Select "Common"-"System
Environment" to open the
"System Environment"
window.
b) Select "System
Information".
c) Set "Read Device" (System
Signal 1).
d) Click the "External I/O
Function Output
Information" check box to
give a check mark.
e) Click the "OK" button to
close the "System
Environment" window.
b13 b12 b11 b10 b9 b8 b7 b6
Wiring and Handling of Switches 3
b5 b4 b3 b2
SW4 SW3 SW2 SW1
3-6
b1 b0