5
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLC User's Manual - Positioning Control Edition
Table of Contents
4. Before Programming B-47
4.1 List of Related Devices ..............................................................................................................B-47
4.1.1 Special Auxiliary Relays .............................................................................................................B-47
4.1.2 Special Data Registers...............................................................................................................B-49
4.2 Setting of Various Items Regarding Speeds ..............................................................................B-50
4.2.1 Setting of Various Items Regarding Instructions and Speeds ....................................................B-50
4.2.2 Setting of Output Pulse Frequency (DVIT, PLSV, DRVI, and DRVA Instructions).....................B-52
4.2.3 Setting of Zero Return Speed (DSZR/ZRN Instruction)..............................................................B-53
4.2.4 Setting of Creep Speed (DSZR/ZRN Instruction) .......................................................................B-54
4.2.5 Setting of Maximum Speed ........................................................................................................B-54
4.2.6 Setting of Bias Speed.................................................................................................................B-55
4.2.7 Setting of Acceleration Time.......................................................................................................B-55
4.2.8 Setting of Deceleration Time ......................................................................................................B-56
4.3 Various Special Relays for Operation Commands.....................................................................B-57
4.3.1 Forward Rotation Limit and Reverse Rotation Limit ...................................................................B-57
4.3.2 Immediate Stop of Pulse Output (Pulse Output Stop Command Relay) ....................................B-58
4.3.3 Designation of Zero Return Direction (DSZR/ZRN Instruction) ..................................................B-58
4.3.4 CLEAR Signal Output (DSZR/ZRN Instruction)..........................................................................B-60
4.3.5 Change in Logic of Near-Point (DOG) Signal (DSZR Instruction) ..............................................B-61
4.3.6 Change in Logic of Zero-Phase Signal (DSZR Instruction) ........................................................B-61
4.3.7 Designation of Interrupt Input Signal for DVIT Instruction ..........................................................B-62
4.3.8 Change in Logic of interrupt input Signal (DVIT Instruction) ......................................................B-63
4.3.9 Acceleration/Deceleration by PLSV Instruction..........................................................................B-64
4.4 Current Value and Flag for Monitoring of Operation ..................................................................B-65
4.4.1 Current Value .............................................................................................................................B-65
4.4.2 Completion of Instruction Execution
("Instruction execution complete" Flag, "Instruction execution abnormal end" Flag) .................B-66
4.4.3 "Pulse Output Monitor" (BUSY/READY) Flag.............................................................................B-66
4.4.4 "Positioning Instruction Activation" Flag .....................................................................................B-66
4.5 Setting of Various Items on PLC Side........................................................................................B-67
4.5.1 Setting of Common Items Using Program ..................................................................................B-67
4.5.2 Setting of High-Speed Output Special Adapter ..........................................................................B-71
4.6 Setting of Various Items on Servo Amplifier (Drive Unit) Side ...................................................B-73
4.6.1 Setting the Command Pulse Method..........................................................................................B-73
4.6.2 Setting of Electronic Gear (For MELSERVO Series)..................................................................B-77
4.6.3 Setting of "Servo Ready" Signal (MELSERVO MR-C Series) ....................................................B-78
4.7 Items To Be Observed in Programming.....................................................................................B-79
4.7.1 Positioning Instruction Activation Timing ....................................................................................B-79
4.7.2 STOP instruction ........................................................................................................................B-81
4.7.3 Correction of Backlash ...............................................................................................................B-81
4.7.4 "Instruction execution complete" Flag of Positioning Instruction and
Completion of Positioning...........................................................................................................B-81
4.7.5 Operation Error Flag...................................................................................................................B-84
4.7.6 Write during RUN .......................................................................................................................B-84
4.8 Items To Be Observed When Using the Main Unit (Transistor Output) .....................................B-85
4.9 Caution for Using the High-Speed Output Special Adapter (FX
3U-2HSY-ADP)........................B-86
4.10 Format and Execution of Applied Instruction ...........................................................................B-88
5. Operation Test B-90
5.1 Test Procedure...........................................................................................................................B-92
5.2 Creation of Test Program...........................................................................................................B-96
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