452
Inputting Character Strings
Section 7-15
- Frequency order screen
Cycle time over 114
Abnormal high function unit 153
Abnormal remote I/O 139
The following countermeasure should
be taken:Program is checked again.
Setting of cycle time over not detected
(DM6655:X1XX)
Cycle time
exceeds 100 msec!
7-15-3 Resume Function
The NT31/NT31C has a function to protect the contents of memory tables that
have been changed during operation (by the numeral/character string setting
function, or by an instruction from the host) and retain them even when the power
to the NT31/NT31C is OFF or the NT31/NT31C is reset, so that operation can be
restarted in the same status the next time the NT31/NT31C is started. This func-
tion is called the “resume function”.
When the resume function is set, the contents of the memory tables are not initial-
ized when the power is turned OFF, when the NT31/NT31C is reset, or on existing
from the System Menu.
This means that when operation is restarted the next time, the same screen as
previously displayed can be displayed again by writing the data that was stored in
the memory tables to the host. However, when a memory table is allocated to a
word at the host and the memory table is set not to be initialized, the contents ofthe
word at the host will be written to the memory table instead of the other way round,
therefore the previous contents of the memory table will be lost.
Even if the resume function is set, if memory table initialization is executed, the
memory table contents will be initialized to the defaults set with the Support Tool.
Whether the resume function is used or not is set with the memory switches of the
NT31/NT31C. For details, refer to 6-9-10 “Setting the Resume Function” (page
203).
Reference:
When the voltage of the NT31/NT31C’s built-in battery becomes low, the memory
table contents cannot be retained even if “ON” is set for the resume function.
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