IDEC MICRO/I HG4G-CJT22 F-B Series User Manual page 284

3 Project Settings Dialog Box
System Area
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Overview
The area of predetermined device addresses to control the screen and communicate error information and time
information between the MICRO/I and the external device is called the System Area.
The System Area on the MICRO/I is as follows.
System Area
System Area 1
System Area 2
System Area 3
System Area 4
To use System Area 1 and 2, select the Use System Area check box on the Project Settings dialog box. To use
System Area 3 and 4, select the Use System Area 3, 4 check box.
Specify the word device to use as the System Area in Device Address to allocate the System Area starting at the
configured device address.
Click to display the Tag Editor. For the device address configuration procedure, refer to Chapter 2 "5.1 Device
Address Settings" on page 2-68.
Example: When Device Address is configured as LDR100
(The address number of Top Device Address)
System Area 1
This area configures the MICRO/I display, beep, and clearing bits.
Address
Bit
number
+0 0 to 15
0
+1
1
4-30
Number of word addresses
2
2
4
4
LDR100
LDR101
+1
+2 LDR102
+3 LDR103
+4 LDR104
LDR105
+5
+6 LDR106
+7 LDR107
+8 LDR108
LDR109
+9
+10 LDR110
+11 LDR111
Function
Display screen number
Backlight
Flash display (1 sec. cycle)
WindO/I-NV4 User's Manual
Read and write
Write
Read
Write
System Area 1
System Area 2
System Area 3
System Area 4
This bit stores the number of the screen being displayed. Write a value to
this bit to change the screen to that number. Immediately after the power
is turned on, the value configured by Default Screen in the Project
Settings dialog box is stored here.
If the screen number does not exist in the project data, an error message
(No screen data) is displayed. However, when 0 is written to this bit, the
screen is not switched and no error message is displayed.
This bit stores the illumination state of the backlight. Write a value to this
bit to change the state.
0: Off
Turns the backlight off.
1: On
Turns the backlight on.
This bit stores the screen flash state (1 sec. cycle). Write a value to this
bit to change the state. This bit is 0 immediately after the power is turned
on.
0: Do not flash
Stop flashing the screen and turn it on.
1: Flash
Flashes the screen in one second intervals.
When the Flash display (1 sec. cycle) (address number+1, bit 1) and
the Flash display (0.5 sec. cycle) (address number+1, bit 2) are both
1, the screen flashes at one second intervals.
User Access
Description