Continually Monitoring A Specific Pc Bit And Displaying An Alarm When It Comes On - Omron NT31C Reference Manual

Examples of Actual Applications of Direct Access
5-1 Examples of Actual Applications of Direct Access

Continually Monitoring a Specific PC Bit and Displaying an Alarm When It Comes ON

Example:
1, 2, 3...
392
Some examples that will give you an idea of how to actually apply the functions
of the PT such as those indicated below are presented here.
• Continually monitoring a specific PC bit and displaying an alarm when it comes
ON ...... page 392
• Changing display contents in accordance with PC bit status ..... page 396
• Displaying online help with a touch switch ..... page 398
• Continually monitoring a specific PC bit and displaying a message on a win-
dow when it comes ON ..... page 399
• Continuously reading out the contents of a PC word and displaying a trend
graph by backtracking ..... page 400
• Displaying the day of the week using the clock data in the PT ..... page 402
• Enabling and disabling a touch switch with an interlock bit .... page 403
• Scaling the contents of a PC word and displaying the result..... page 404
In these examples, only the necessary settings are shown. Make the unspeci-
fied settings according to your requirements. In some of the examples, colors
other than black and white are used for the display colors; note that these exam-
ples can be applied even with monochrome type PTs, for example by setting the
display of black and white in reverse video.
For the method for creating screens with the Support Tool, refer to the NT-Series
Support Tool Ver. 4.0 for Windows Operation Manual .
Displaying TEMPERATURE ABNORMAL in red, regardless of the screen cur-
rently displayed, when the monitored bit at the PC comes ON.
1. Set TEMPERATURE ABNORMAL as the initial value for any character
string memory table.
2. Make the following settings for any bit memory table.
• PC Address:
• Function:
• String table entry: Number of the character string memory table for
3. Register an alarm list, set as indicated below, for any screen.
• Color setting, Frame:
Black (same as the background color of other screens)
• Color setting, Background, ON:
Red
• List Settings:
Set the Start Bit Table Entry and No. of Bits Referenced so as to include the
bit memory table set in (2) above.
4. Set overlapping screens so that all screens displayed on the PT are over-
lapped by the screen created in (3).
PT
ON
TEMPERATURE
ABNORMAL
Alarm list
PC bit number to be monitored
Alarm
which settings were made in (1).
Section 5-1
PC
Bit
1