9 - 110
Chapter 9 Major Positioning Control
Restrictions
(1) The error "Continuous path control not possible" (error code: 516) will occur
and the operation cannot start if "continuous positioning control" or
"continuous path control" is set in "
Da.1
Operation pattern
".
(2) "Speed-position switching control" cannot be set in "
Da.2
Control method
" of the
positioning data when "continuous path control" has been set in "
Da.1
Operation pattern
" of the immediately prior positioning data. (For example, if the
operation pattern of positioning data No. 1 is "continuous path control",
"speed-position switching control" cannot be set in positioning data No. 2.) The
error "Continuous path control not possible" (error code: 516) will occur and
the machine will carry out a deceleration stop if this type of setting is carried
out.
(3) The error "No command speed" (error code: 503) will occur if "current speed
(-1)" is set in "
Da.8
Command speed
".
(4) If the value set in "
Da.6
Positioning address/movement amount
" is negative, the
error "Outside address range" (error code: 530) will occur.
(5) Even though the axis control data "
Cd.23
Speed-position switching control
movement amount change register
" was set in speed-position switching control
(ABS mode), it would not function. The set value is ignored.
(6) To exercise speed-position switching control (ABS mode), the following
conditions must be satisfied:
(a) "
Pr.1
Unit setting
" is "2: degree"
(b) The software stroke limit function is invalid (upper limit value = lower limit
value)
(c) "
Pr.21
Current feed value during speed control
" is "1: Update current feed
value"
(d) The "
Da.6
Positioning address/movement amount
" setting range is 0 to
359.99999 (degree)
If the value is outside of the range 0 to 359.99999 (degree), the error
"Outside address range" (error code: 530) will occur at a start.
(e) The "
Pr.81
Speed-position function selection
" setting is "2: Speed-position
switching control (ABS mode)".
(7) If any of the conditions in (6) (a) to (6) (c) is not satisfied in the case of (6) (e),
the error "Speed-position function selection error" (error code: 935) will occur
when the PLC READY signal [Y0] turns from OFF to ON.
(8) If the axis reaches the positioning address midway through deceleration after
automatic deceleration started at the input of the speed-position switching
signal, the axis will not stop immediately at the positioning address. The axis
will stop at the positioning address after N revolutions so that automatic
deceleration can always be made. (N: Natural number)
In the following example, since making deceleration in the path of dotted line
will cause the axis to exceed the positioning addresses twice, the axis will
decelerate to a stop at the third positioning address.
Speed-position switching signal
positioning address
360 added
360 added
positioning address
positioning address
Summary of Contents for MELSEC-L Series
Page 2: ......
Page 30: ...MEMO ...
Page 70: ...2 10 Chapter 2 System Configuration MEMO ...
Page 83: ...3 13 Chapter 3 Specifications and Functions MEMO ...
Page 103: ...3 33 Chapter 3 Specifications and Functions MEMO ...
Page 107: ...3 37 Chapter 3 Specifications and Functions MEMO ...
Page 111: ...3 41 Chapter 3 Specifications and Functions MEMO ...
Page 115: ...3 45 Chapter 3 Specifications and Functions MEMO ...
Page 140: ...4 22 Chapter 4 Installation Wiring and Maintenance of the Product MEMO ...
Page 253: ...5 113 Chapter 5 Data Used for Positioning Control MEMO ...
Page 342: ...5 202 Chapter 5 Data Used for Positioning Control MEMO ...
Page 438: ...7 20 Chapter 7 Memory Configuration and Data Process MEMO ...
Page 440: ...MEMO ...
Page 485: ...9 25 Chapter 9 Major Positioning Control MEMO ...
Page 594: ...9 134 Chapter 9 Major Positioning Control MEMO ...
Page 624: ...10 30 Chapter 10 High Level Positioning Control MEMO ...
Page 656: ...11 32 Chapter 11 Manual Control MEMO ...
Page 690: ...12 34 Chapter 12 Expansion Control MEMO ...
Page 798: ...13 108 Chapter 13 Control Sub Functions MEMO ...
Page 866: ...14 68 Chapter 14 Common Functions MEMO ...
Page 884: ...15 18 Chapter 15 Dedicated Instructions MEMO ...
Page 899: ...16 15 Chapter 16 Troubleshooting MEMO ...
Page 1036: ...Appendix 88 Appendices MEMO ...
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