Mitsubishi Electric MELSEC iQ-F FX5 - Page 410

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30 POSITIONING PARAMETER
30.2 Details of Parameters
■OPR Zero Signal Counts
Setting method: High Speed I/O Parameter, Special Device
Set the number of zero signals until OPR stops after detection of the near-point dog. The timing of counting start of the
number of zero signals can be selected using the count start timing between the front end and rear end of the near-point dog.
The setting range is from 0 to 32767. When the near-point dog signal and zero signal are set in the same device, the number
of zero signals is fixed to 1.
■Special Device
Precautions
When the OPR zero signal counts is set to 0, the motor stops immediately after the near-point dog is detected. If a sudden
stop may damage the devices, take the following measures.
• Set the creep speed to a low speed.
• Set the timing of counting start of the number of zero signals to the rear end of the near-point dog.
• Design the near-point dog so that the speed can be decelerated to the creep speed before counting the number of zero
signals is started.
■Count Start Time
Setting method: High Speed I/O Parameter, Special Device
Specify the timing of counting start of the number of zero signals.
■High Speed I/O Parameter
When [0: Near-point Dog Latter Part] is selected, start counting at the falling edge of the near-point dog.
When [1: Near-point Dog Front Part] is selected, start counting at the rising edge of the near-point dog.
■Special Device
Zero signal count start timing is turned off: Start counting at the falling edge of the near-point dog.
Zero signal count start timing is turned on: Start at the rising edge of the near-point dog.
Name CPU module High-speed pulse input/output module R/W
First module Second module Third module Fourth module
Axis 1 Axis 2 Axis 3 Axis 4 Axis 5 Axis 6 Axis 7 Axis 8 Axis 9 Axis 10 Axis 11 Axis 12
OPR zero
signal counts
SD5532 SD5572 SD5612 SD5652 SD5692 SD5732 SD5772 SD5812 SD5852 SD5892 SD5932 SD5972 R/W
R/W: Read/Write
Name CPU module High-speed pulse input/output module R/W
First module Second module Third module Fourth module
Axis 1 Axis 2 Axis 3 Axis 4 Axis 5 Axis 6 Axis 7 Axis 8 Axis 9 Axis 10 Axis 11 Axis 12
Zero signal
count start
time
SM5868 SM5869 SM5870 SM5871 SM5872 SM5873 SM5874 SM5875 SM5876 SM5877 SM5878 SM5879 R/W
R/W: Read/Write