Chapter 6. CPU Function
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6.5.2 Processing time and processing method of Force Input/Output On and Off
(1) Forced Input
Regarding input, at the time of input refresh it replaces the data of contact set as Force On/Off among data
read from input module with the data as Force and updates input image area. Therefore, user program
executes operations with actual input data while Force input area is operated with data set as Force.
(2) Forced Output
Regarding output, at the time of output refresh upon the execution user program operation, it replaces the data
of contact set as Force On/Off among data of output image area containing operation results with data set as
Force and outputs the data in output module. Unlike (Force) input, the output image area is not changed by
Force On/Off setting.
(3) Cautions when using Force I/O function
(a) It operates from the time when I/O is individually set as ‘Allow’ after setting Force data.
(b) It is possible to set Force input although I/O module is not actually mounted.
(c) Despite of the power changed Off -> On, operation mode changes or any operation by pressing reset key, the
data of which On/Off is set before is kept in CPU module.
(d) Even in STOP mode, Force I/O data is not removed.
(e) To set new data from the beginning, it is necessary to deselect all settings of I/O by using ‘Delete All’ option.
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