Hitachi EHV+ Series Applications Manual page 117

When logging in successfully, green circle icon is displayed at [Device]. If mounted I/O modules are matched with
configured ones, green icon is displayed at each I/O module also.
If any mounted I/O module is mismatched, red triangle icon is displayed at mismatched module as below.
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 General Specifications