Mitsubishi Electric MELSEC iQ-R Series Reference Manual page 21

A/D converter module
During the interval from the inter-module synchronization cycle start timing to execution of the inter-module synchronous
interrupt program, the latest A/D conversion value is retrieved and stored in the synchronization latch digital operation value or
synchronization digital output value. The synchronization latch digital operation value and synchronization digital output value
are held during the inter-module synchronization cycle. By reading the synchronization latch digital operation value or
synchronization digital output value from the inter-module synchronous interrupt program, multiple modules can read the A/D
conversion value at the same timing.
CPU module
A/D converter module No.1 CH1
A/D conversion
value 1
A/D conversion value
Synchronization latch digital operation value
or synchronization digital output value
A/D converter module No.2 CH1
A/D conversion value
Synchronization latch digital operation value
or synchronization digital output value
For details on the inter-module synchronization function in the A/D converter module, refer to the following.
Each A/D converter module manual
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Normal program
Input Operation Output
refresh processing refresh
Read an A/D conversion value.
A/D conversion
A/D conversion
value 1
value 1
A/D conversion A/D conversion A/D conversion
value 2 value 3 value 4
A/D conversion value 1
A/D conversion A/D conversion A/D conversion A/D conversion
value 1 value 2 value 3 value 4
A/D conversion value 1
Inter-module
synchronization cycle
Inter-module synchronous
interrupt program
Input Operation Output
refresh processing refresh
Read an A/D conversion value.
A/D conversion
A/D conversion
value 5
value 5
A/D conversion A/D conversion A/D conversion A/D conversion
value 5 value 6 value 7 value 8
A/D conversion value 5
A/D conversion A/D conversion A/D conversion
value 5 value 6 value 7
A/D conversion value 5
5.1 Fixed Cycle Synchronization Function
Normal program
A/D conversion A/D conversion
value 9 value 10
A/D conversion A/D conversion
value 8 value 9
5 FUNCTION
5
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