Hitachi MICRO-EHV+ Applications Manual page 91

Write values
Prepare values for the variables by clicking at [Prepared value] or double clicking at ladder symbols.
Choose the menu [Debug]-[Write values] or press [Ctrl + F7]. The prepared values will be transferred to PLC.
Online change
To change your program in running CPU (online change), you have to logout at first. After program changing, choose
[Login] again. You will have 3 options as below.
Login with online change:
Login with download:
Login without any change:
Only incremental program is downloaded without CPU stop.
Whole the program is downloaded. CPU is forced to stop.
New program is not downloaded.
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Chapter 3 Programming