Mitsubishi Electric FX3U SERIES - Function and Operation

FX 3S /FX 3G /FX 3GC /FX 3U /FX 3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6 Mechanical Zero Return - DSZR/ZRN Instruction
6.2 DOG Search Zero Return (DSZR Instruction)
B - 102
6.2.3 Function and Operation
 For details on the maximum speed, bias speed, acceleration time, and deceleration time, refer to
Subsection 4.2.5 to Subsection 4.2.8.
*1. X000 to X005 for FX
3S PLC.
1) For , specify the near-point signal (DOG) input device number. To specify the logic of this near-
point signal (DOG), turn the "DOG signal logic reverse" relay on or off as shown in the following table.
• Detection of (the rear end and the front end of) the near-point signal (DOG) will be affected by the input
filter and the scan time of the sequence program.
Secure 1 scan time or more from the rear end of the DOG to turning ON of the zero-point signal.
Pulse output
destination device
"DOG signal logic
reverse" relay
Description
= Y000
M8345
OFF: Positive logic (Turning on the input will turn on the
near-point signal.)
ON: Negative logic (Turning off the input will turn on the
near-point signal.)
= Y001
M8355
= Y002 M8365
= Y003 M8375
Command
input
FNC150
DSZR
S
2
•S
1
• D
1
• D
2
•
Maximum speed
Initial value: 100,000Hz
Zero return speed
Initial value: 50,000Hz
Deceleration
time
Bias speed
Initial value: 0Hz
Acceleration
time
Creep speed
Initial value:
1,000Hz
CLEAR signal
Zero-phase signal
(X000 to X007)
*1
1 ms or less
20 ms + 1 scan time (ms)
S2
Current value register = "0"
Initial value:
100 ms
Initial value:
100ms
DOG
S
1
Front endRear end
S
1
D 1
D 1
D 1
D 1
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