Relevant elements:
Multi-stage speed drive
1)
ABS Absolute drive
2)
2
Relative drive
Executlon lime:
Waiting type (Indefinite until positioning has been completed.)
The multi-stage speed drive can be executed by using an SPD instruction and position designation
instruction in combination.
Example
of
a multi-stage speed drive
ADR,
EXT instructions are applicable
to
the designation of the position.
Speed
1
(1)
1,500
_I
(2)
1,000
J
(3)
2,500
1
In this example, ex-
ecute positioning
while changing the
operation speed in
areas
(1)
to
(3).
(Initial relative drive) (Initial absolute drive)
SPD
K
3000
4
Note
1
.
SPD
K
3000
r
ADR
K
1500
-
Note
2
.
ADR
+
4000
1
1
DRVC
t
DRVC ABS
I
SPD
K
2000
SPD
K
2000
ADR
K
1000
SPD, ADR,
and
ADR
K
1000
Note
SPD
K
1600
dedicated
to
DRVC SPD
K
1600
Note
3
register
DCR
are
L
ADR
K
2500
4
instructions
ADR
K
2500
1
NOP NOP
Note
1:
This instruction is not necessary when driving at a speed designated by parameter
number
4.
Note
2:
The previous relative address or absolute address is valid
to
the position data of the DRVC
instruction.
Use DRVC
t-
instruction or DRVC
ABS
instruction as appropriate.
Note
3:
Speed changes can be done in up
to
8
stages by a series of instructions. In such cases,
however, other instructions cannot be programmed in between.
Only the relative address is valid for the designation of a series of positions after a DRVC
instruction.
Always be sure to program an
NOP
instruction to indicate the DRVC end (i.e., stop).
A
series of these instructions are read in advance by the dedicated register DCR when the
DRVC instruction is executed, and then the actual operation is executed.
After completing the operation of the DRVC instruction, the values of the max. speed
setting register
(MSR)
and setting value register (SVR) are returned to the original values
before the DRVC instruction.
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