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CHAPTER2 SEQUENCE PROGRAMS
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2.2 Sequence Program Configuration
2.2.3 Interrupt program
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(e) When an interrupt factor occurs during link refresh
The link refresh is suspended and an interrupt program is executed.
Even if the Block data assurance per station setting is enabled in the CC-Link IE controller network
or MELSECNET/H network, this setting does not work when a device set as a refresh target is used
in the interrupt program.
In the interrupt program, do not use any refresh target device.
Remark
For the Block data assurance per station setting, refer to the following.
Reference manual for each network module
(f) Interrupt during END processing
When the constant scan function is used and an interrupt factor occurs during the waiting time in
END processing, an interrupt program corresponding to the interrupt factor is executed.
(g) When an interrupt factor occurs during access to another module
When an interrupt factor occurs during access to another module (during service processing or instruction
processing), the interrupt program becomes standby status until the service processing or the instruction in
execution is completed.
To shorten the wait time of the interrupt, reduce the amount of data that access to other modules.
Figure 2.14 When an interrupt factor occurs during link refresh
10ms 10ms 10ms 10ms
Interrupt program
execution
Link refresh execution
Link refresh is suspended and
interrupt program is executed.
Interrupt factor