Mitsubishi Electric MELSEC iQ-R Series User Manual page 91

■Changing the module setting
• To write the default values with a program without using the module parameter or to change the parameter setting during
module operation, the program that writes setting values and turns on and off 'Operating condition setting request' (Y9) is
required to enable the setting.
When the D/A converter module is set as the synchronization target, the I/O setting is refreshed before and
after the execution of the inter-module synchronous interrupt program (I44). Thus, use the direct access (DY)
to immediately reflect the setting into the D/A converter module by turning on and off 'Operating condition
setting request' (Y9).
Operation example
When the inter-module synchronization function is used, control is basically performed with the inter-module synchronous
interrupt program (I44).
To improve the synchronization performance of the entire system, the dedicated refresh target data is used when the inter-
module synchronous interrupt program (I44) is executed. The following shows the refresh target data.
• 'CH1 Synchronization digital value' (Un\G9500)
• 'Synchronization status monitor' (Un\G9600)
7.
Create an inter-module synchronous interrupt
program (I44).
The inter-module synchronous interrupt program
(I44) is executed at every inter-module
synchronization cycle set by a customer. For details
on interrupt programs, refer to the following.
 MELSEC iQ-R CPU Module User's Manual
(Application)
1.15 Inter-Module Synchronization Function
1
1 FUNCTIONS
89