You cannot add or delete system
variables.
The names of system variables is the same
regardless of [Variable Format] and [Address Format].
#L system variables are retentive variables.
Even if you turn off the display unit, their current values are
saved. #H system variables are volatile variables. You can confirm
if a variable is retentive or volatile in the Properties window's
[Detail Settings].
#H system variables are not synchronized
with logic programs. Therefore, depending on the timing you may not
be able to get the exact value you were expecting.
