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6.23 Interrupt from Intelligent Function Module
Note27
The CPU module can execute an interrupt program (I ) by the interrupt request from the intelligent function module.
For example, the serial communication module can receive data by an interrupt program when the following data
communication functions are executed.
• Data reception during the communication by nonprocedural protocol
• Data reception during the communication by bidirectional protocol
Using an interrupt program enables a CPU module to receive data quickly.
(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 of the intelligent function module used
Remark
For the numbers of interrupt pointers available for an interrupt from the intelligent function module, refer to Section 9.10.
Note27
Figure 6.91 Interrupt from a serial communication module
Note6.27
When using an interrupt from the intelligent function module for the Basic model QCPU, check the versions of the CPU
module and GX Developer. (
Basic
I
Serial communication
module
CPU module
Main program
Main program
Issues an
interrupt.
Reception
Sends data.
FEND
BUFRCVS
SM400
External device to be communicated
Interrupt program
execution
