IDEC SmartAXIS Touch FT1A Series, Руководство пользователя

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SmartAXIS Touch User's Manual
3-63
4 Special Functions
3
Pr
oject
Overflow
Select this check box to use overflow in the comparison action conditions (when the current value exceeds
4,294,967,295).
Underflow
Select this check box to use underflow in the comparison action conditions (when the current value falls below 0).
■
Keep
After the current value matches the preset value, select to reset the current value to a reset value or to keep the
value. Select this check box to keep the current value.
■
Use HSC Reset Input
Select this check box to reset the current value to a reset value with external input (high-speed counter reset input).
High-speed counter reset input can only be specified for group 1.
When high-speed counter reset input is turned on, the current value is reset to a reset value.
If high-speed counter reset input is not used, I2 is normal input.
High-speed counter devices
The high-speed counter operates according to special internal relay and special data register settings. While the high-
speed counter is operating, the current value, control output, and operating status value are reflected in the special
internal relays and special data registers with each scan.
The high-speed counter start and stop control signals and the current value, preset values, and reset values are
allocated to the special internal relays and special data registers.
Device allocation table
The devices used by the high-speed counter are as follows.
Special internal relay list
When the comparison action is Comparison Output and either a preset value, overflow, or underflow has
been enabled as a comparison condition, the text box to enter the comparison output is enabled. The
comparison output can be specified for each of these match conditions.
Group External input
Group 1 I2
Group
1
(I0 to I1)
2
(I2)
3
(I3)
4
(I4)
5
(I5)
Read/Write
Comparison
Output Reset
M8030 M8040 M8055 M8166 M8173
R/W
Gate Input M8031 M8041 M8056 M8167 M8174
Reset Input M8032 M8042 M8057 M8170 M8175
Reset Status M8033 – – – –
R
Comparison ON
Status
M8034 M8043 M8060 M8171 M8176
Overflow M8035 M8044 M8061 M8172 M8177
Underflow M8036 – – – –
Count Direction
Flag
M8037 – – – –