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FX Series Programmable Controlers Applied Instructions 5
5-63
5.6.10 PLSR (FNC 59)
Operation:
A specified quantit
y
of pulses S
2
is output throu
g
h
device D. The output frequenc
y
is first ramped up
in 10 steps to the maximum frequenc
y
S
1
in
acceleration time S
3
ms, then ramped down to stop
also in S
3
ms. This instruction is used to
g
enerate
simple acceleration/deceleration curves where the
quantit
y
of outputs is of primar
y
concern.
Points to Note:
a) FX
2N
users ma
y
use frequencies of 10 to 20,000Hz. The frequenc
y
should be set to a
multiple of 10. If not it will be rounded up to the next multiple of 10.
The acceleration and deceleration steps are set to 1/10 of the maximum frequenc
y
. Take
this in to consideration to prevent slippin
g
, when usin
g
steppin
g
motors.
b) The maximum number of pulses: 16 bit operation: 110 to 32,767 pulses,
32 bit operation: 110 to 2,147,483,647 pulses.
Correct pulse output can not be
g
uaranteed for a settin
g
of 110.
c) The acceleration time must conform to the limitations described on the next pa
g
e.
Mnemonic Function
Operands
Program steps
S
1
S
2
S
3
D
PLSR
FNC 59
(
Pulse
ramp)
Outputs a
specified number
of pulses,
rampin
g
up to a
set frequenc
y
and
back down to stop
K, H,
KnX, KnY, KnM, KnS,
T, C, D, V, Z
Note:
S1
S2
Y
FX
2N
users:
Y000 or Y001 onl
y
.
PLSR:
9 steps
DPLSR:
17 steps
M54
K500 D0 K3600 Y00PLSR
[S
1
] 10 - 20,000 Hz
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
[S
3
] Max 5000 ms
Total [S
2
]
Pulses
Hz
[S
3
] Max 5000 ms
[S
1
]/10
secs