Eaton easyE4

5. Programming on the device
5.7 Using operands in a program
Permissible time ranges for timer constants (as an input value for T or AC function
blocks)
You can set the following time ranges for the function blocks:
time range Function block T

Function block AC
S - 000.000 5 ms resolution
✓  –
M:S - 00:00 1 s resolution
✓  –
H:M - 00:00 1 min. resolution
✓  ✓
Changes to timer constants when the time range for a function block changes
If the time range for a function block changes, the time ranges of all timer constants
connected to the function block will change as well. The values of these timer con-
stants will then be changed accordingly, with an important limitation being the fact
that the changed values will not be allowed to exceed or fall below the new time
ranges. If any data or accuracy is lost, a message to this effect will be shown.
Example:
Say that the time range for a function block T is changed fromH:M - 00:00 and a res-
olution of 1 min. to M:S - 00:00 and a resolution of 1 s.
How would the following timer constant values change?
H:M - 00:00 1 min.
resolution
M:S - 00:00 1 s res-
olution

Note
70h 00m
0m 00s  The conversion results in 4200 minutes. However, this
exceeds the max. time range limit of 99 minutes for the
timer constants -> message
1h 02m
62m 00s  ✓
1h 39m
99m 00s  ✓
1h 40m
40m 00s  The conversion results in 100 minutes. However, this
exceeds the max. time range limit of 99 minutes for the
timer constants -> message
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