Chapter 5. Power Supply / CPU
5-
12
5.4
Program
5.4.1 Program configuration
A program consists of all of the function elements that are needed to execute a particular control. It is to be stored in the
internal RAM of the CPU part or the EEPROM memory. The function elements are classified as below.
Function elements
Processing Operation
Initialization program
•
Executes when the power is applied or the CPU operation is transited to the RUN mode.
•
Executes the initial/fixes data setting for execution of scan program and the initialization of
peripheral devices on special modules.
Scan program
•
Processes the constantly repeated signals that are executed every scan.
Time driven task
Program
•
When the following time conditional processing is required the program is executed
complying with the time interval setting.
- In case of the processing need a shorter interval than that of average scan processing time.
- In case of the processing needs a longer interval than that of average scan processing time.
- In case that the processing should be executed by the specified time interval.
Interrupt program
•
A fast processing is executed for internal or external interrupt.
HSC interrupt program
•
Executes when HSC Comparison Output occurs.
5.4.2 Program execution procedure
The followings explain the program execution procedure when the power is applied or the mode-setting switch of CPU part is
in the RUN status. Program operation processing is executed as the procedure given below:
Operation start
Initializing program
Scan program
END processing
External task program
Time driven task program
Executed only when
the condition has been
satisfied
.
y
Executes when the power has been
applied or the CPU operation is in the
Run mode.
∗
1
Internal task program
Executed only when
the condition has been
satisfied
.
Summary of Contents for GLOFA G7M-DR20U
Page 28: ...Chapter 4 Names of Parts 4 3 2 G7M DRT60U N 3 G7M DT60U N 4 G7M DT60U P...
Page 29: ...Chapter 4 Names of Parts 4 4 5 G7M DR60U DC 6 G7M DRT60U N DC 7 G7M DT60U N DC...
Page 31: ...Chapter 4 Names of Parts 4 6 3 G7M DT40U N 4 G7M DT40U P 5 G7M DR40U DC...
Page 32: ...Chapter 4 Names of Parts 4 7 6 G7M DRT40U N DC 7 G7M DT40U N DC 8 G7M DT40U P DC...
Page 33: ...Chapter 4 Names of Parts 4 8 4 1 3 30 point main unit 1 G7M DR30U 2 G7M DRT30U N 3 G7M DT30U N...
Page 34: ...Chapter 4 Names of Parts 4 9 4 G7M DT30U P 5 G7M DR30U DC 6 G7M DRT30U N DC...
Page 36: ...Chapter 4 Names of Parts 4 11 2 G7M DRT20U N 3 G7M DT20U N 4 G7M DT20U P...
Page 37: ...Chapter 4 Names of Parts 4 12 5 G7M DR20U DC 6 G7M DRT20U N DC 7 G7M DT20U N DC...
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Page 159: ...Chapter 7 Usage of Various Functions 7 52 c Program...
Page 183: ...Chapter 7 Usage of Various Functions 7 76 c Program...
Page 253: ...Chapter 8 Communication Functions 8 27 b When uses Ch 1 Built in RS 485...
Page 356: ...Appendix 1 System Definitions App1 9 6 Position Parameter...
Page 357: ...Appendix 1 System Definitions App1 10 7 High Speed Counter Parameter...