User`s manual
Table Of Contents
- SAFETY PRECAUTIONS
- CONDITIONS OF USE FOR THE PRODUCT
- REVISIONS
- INTRODUCTION
- CONTENTS
- ABOUT MANUALS
- HOW TO USE THIS MANUAL
- ABOUT THE GENERIC TERMS AND ABBREVIATIONS
- PACKING LIST
- 1. OVERVIEW
- 2. SYSTEM CONFIGURATION
- 3. FUNCTION LIST
- 4. INSTALLATION AND UNINSTALLATION
- 5. SCREEN MAKEUP AND BASIC OPERATIONS
- 6. PROJECT CREATION
- 7. SYSTEM CHECKING FROM PERIPHERAL DEVICE
- 8. DATA SETTING
- 9. WRITING TO/READING OF/VERIFICATION OF POSITIONING MODULE DATA
- 10. POSITIONING DEBUGGING
- 11. USEFUL FUNCTIONS
- APPENDIX
- Appendix 1 Read from Module/Write to Module Reference Processing Times
- Appendix 2 Restrictions Depending on Function Version of QD75
- Appendix 3 Functions Added to/Changed from the Previous Versions
- Appendix 4 Uninstalling the License Key FD
- Appendix 5 Parameter Names Shown in GX Configurator-QP Screens and Manuals
- INDEX

10 - 14 10 - 14
MELSOFT
10. POSITIONING DEBUGGING
DISPLAY/SETTING DATA
Item Description
Title bar Shows the I/O address of the QD75/LD75/LD77 being monitored.
Target value
Shows the destination for positioning control.
For velocity/position switching control or position/velocity switching control, "0" is displayed
for velocity control and the destination appears for position control.
"0" is shown for other operations.
Buffer memory address (Axis #1): 818, 819
Machine feed value
Indicates the current position whose original point is the inherent position determined by the
machine (mechanical coordinates).
On completion of OPR, this value indicates the original point address.
Buffer memory address (Axis #1): 802, 803
Actual current value
Shows the actual current value.
The original point address is displayed at completion of OPR.
The actual current value is displayed only when the QD75M/QD75MH/LD77 is chosen in
model selection.
Buffer memory address (Axis #1): 850, 851
Current value changed
value
Shows the feed current value changed with the positioning start No. 9003.
Buffer memory address (Axis #1): 1506, 1507
Velocity change value
Shows the value of speed change made during positioning operation or JOG operation.
Buffer memory address (Axis #1): 1514, 1515
Over ride value
Indicates the override speed set in the program.
Buffer memory address (Axis #1): 1513
Step mode
Indicates the type of the step operation set in the program.
Buffer memory address (Axis #1): 1544
Step valid flag
Shows that the step operation set in the program is valid.
(ON) indicates that the step operation is valid.
Buffer memory address (Axis #1): 1545
Velocity change flag
Shows
(ON) during speed changing.
Buffer memory address (Axis #1): 831
Velocity change 0 flag
Shows
(ON) when the speed is changed to 0 for speed changing.
Buffer memory address (Axis #1): 817 (b10)
Valid external command
Shows that the external command signal set in the program is valid.
(ON) indicates that the start, velocity/position switching or position/velocity switching by
the external command signal is valid.
Buffer memory address (Axis #1): 1505
Skip command
Indicates the skip command given in the program.
Shows
(ON) when the skip command is given.
Buffer memory address (Axis #1): 1547