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6.22 Interrupt from Intelligent Function Module
The CPU module can execute an interrupt program (I
For example, the serial communication module can receive data by an interrupt program when the following data
communication functions are executed.
• Data reception during communication by nonprocedural protocol
• Data reception during communication by bidirectional protocol
Using an interrupt program enables a CPU module to receive data quickly
Serial communication
module
Main program
CPU module
(1) Setting an interrupt from the intelligent function module
To execute an interrupt program by an interrupt from the intelligent function module, select "Interrupt pointer
setting" in "Intelligent function module setting" of the PLC system tab in the PLC parameter dialog box.
Configure system setting at the intelligent function module is also required.
For execution of an interrupt program by an interrupt from the intelligent function module, refer to the following.
Manual for the intelligent function module used
Remark
For the numbers of interrupt pointers available for an interrupt from the intelligent function module, refer to Section 9.11.
External device to be communicated
Sends data.
Issues an
Reception
interrupt.
Interrupt program
execution
Figure 6.91 Interrupt from a serial communication module
) by the interrupt request from the intelligent function module.
.
Main program
SM400
I
CHAPTER6 FUNCTIONS
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