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5.5 Precaution on Using MP2300S
5.5.3 Setting and Changing the Scan Time
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5.5.3 Setting and Changing the Scan Time
( 1 ) Precautions When Setting or Changing the Scan Time
The scan time can be set and changed in the
Scan Time Setting
Window in the
Environmental Setting
Dialog Box on
the MPE720.
Observe the following precautions when setting or changing the scan time.
• Set the set values of the scan time for both the high-speed (H) and low-speed (L) scans to at least the maximum
time required to execute the scans. We recommend setting the set values of the scan time using the formula (set
value
−
maximum time to execute scan)
≥
(0.2
×
set values of the scan time), i.e., setting the set values of the
scan time to at least 1.25 times the maximum times required to execute the scans.
Note: If the scan time is set too close to the maximum execution time for the scan, the refresh time for the
screen on the MPE720 will be very slow and communication timeouts may occur. If the maximum execu-
tion time exceeds the scan time set value, a watchdog timer timeout error will occur and the MP2300S
system will stop.
• Set the set values of the high-speed (H) and low-speed (L) scan time to an integral multiple of the
MECHATROLINK communication cycle (1 or 2 ms) set in the MP2300S. Always check the set values of the
scan time after changing the MECHATROLINK communication cycle.
• Do not change the scan time set value while the Servo is ON. Never change the setting while the axis is moving
(while the motor is running). Otherwise an error may occur during motor operation (e.g., high-speed rotation).
• When the scan time is set or changed, be sure to save the data to flash memory.
Содержание JEPMC-MP2300S-E
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Страница 154: ...5 2 User Programs 5 2 2 Motion Programs 5 22 2 Example using a ladder program ...
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Страница 300: ...7 3 Operation 7 3 5 How to Determine Input Error 7 20 Continued from the previous page ...
Страница 302: ...7 3 Operation 7 3 5 How to Determine Input Error 7 22 Application Example Continued on the next page ...
Страница 306: ...7 3 Operation 7 3 6 Management to Resume Slave CPU Synchronization 7 26 Application Example Continued on the next page ...
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