Chapter 1 Overview - Mitsubishi Electric MELSEC iQ-R Series Reference Manual

1
OVERVIEW
The inter-module synchronization function adjusts the control timing for the signals between multiple modules. When this
function is used, the synchronization target module can match the input or output timing to the inter-module synchronization
cycle. The inter-module synchronization cycle is a fixed scan interval for the inter-module synchronization function. The
multiple CPU system function's fixed communication interval and the CC-Link IE Field Network synchronous communication
function can be coordinated with the inter-module synchronization cycle.
Program
Programmable
controller CPU
Inter-module synchronous
interrupt program (I44)
A/D converter module
(set as a synchronization target)
D/A converter module
(set as a synchronization target)
Input module
(set as a synchronization target)
Output module
(set as a synchronization target)
(1) Refreshing is executed before and after the inter-module synchronous interrupt program (I44).
(2) The input process and output process are performed at the timing of the inter-module synchronization cycle.
1 OVERVIEW
6
Input module
Programmable
controller CPU
Inter-module
synchronization cycle
Operation processing
(1)
Input
Output
Input
Output
(2)
Output module
A/D converter module
D/A converter module
Operation processing
(1)
Input
Output
Output
Input
conversion
Output
Inter-module
synchronization cycle
Input
Output
Output
Input
conversion
Output
Operation processing