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PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4 Before Programming
4.9 Caution for Using the High-Speed Output Special Adapter (FX3U-2HSY-ADP)
B - 77
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
Operation of output
• If an output number of the high-speed output special adapter is used (if an output of the high-speed output
special adapter is connected), do not use (connect) the corresponding output terminal of the main unit.
• If an output number of the main unit is used (if an output of the main unit is connected), do not use
(connect) the corresponding output terminal of the high-speed output special adapter.
*1. The output frequency limit of the main unit transistor output is 100 kHz. When operating a load with a pulse
frequency exceeding 100 kHz, PLC failure may occur.
2. Rotation direction signal of positioning instruction
If an FX3U-2HSY-ADP high-speed output special adapter is used, the rotational direction signal will be
assigned to each pulse output destination device as shown in the following table. Do not assign any other
outputs to these devices using positioning instructions, etc.
→ For details, refer to Subsection 4.5.2.
3. CLEAR signal and rotation direction signal
If an FX3U-2HSY-ADP high-speed output special adapter is used, outputs for the rotation direction signal of
the DSZR (FNC150) or ZRN (FNC156) instruction and the CLEAR signal will overlap as shown in the table
above.
For this reason, in order to output the CLEAR signal, change the CLEAR signal device.
→ For details on the CLEAR signal device change method, refer to Subsection 4.3.4.
4. Pulse output method for high-speed output special adapter
Adjust the pulse output method of the high-speed output special adapter (FX3U-2HSY-ADP) so that the pulse
output method conforms to the command pulse input method of the servo amplifier (drive unit).
If the pulse output method is not properly adjusted, the servo amplifier (drive unit) may not perform the
intended operation.
→ For details on the servo amplifier (drive unit), refer to the manual of the product to be used for your
system.
→ For details on the pulse output method, refer to Subsection 4.6.1 or Subsection 4.5.2.
5. Output pulse frequency (including zero return speed)
Set the output pulse frequency and the zero return speed so that these values can be less than the maximum
frequency value of the servo amplifier (driver unit).
Operation of output
Instruction for outputting pulse train at high speed Other instructions
Main unit of relay output type
If the instruction turns ON, the corresponding output will
be turned on (the corresponding LED will be turned on).
Can be activated.
FX
3U PLC main unit of transistor
output type
Can be activated.
*1
Can be activated.
High-speed output special adapter Can be activated. Can be activated.
Pulse output
destination device
Rotation direction signal
(reverse rotation pulse train / direction)
Initial setting of
CLEAR signal
1st adapter 2nd adapter
1st axis 2nd axis 3rd axis 4th axis
Y000 Y004 - - - Y004
Y001 - Y005 - - Y005
Y002 - - Y006 - Y006
Y003 - - - Y007 Y007