534
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
20 Positioning Control – FNC150 to FNC159
20.6 FNC157 – PLSV / Variable Speed Pulse Output
20.6
FNC157 – PLSV / Variable Speed Pulse Output
Outline
This instruction outputs variable speed pulses with an assigned rotation direction.
→
For explanation of the instruction, refer to the Positioning Control Edition.
→
For cautions on using special high speed output adapters, refer to the Positioning Control Edition.
1. Instruction format
2. Set data
*1.
Setting range:
−
32768 to
−
1 , +1 to +32767 (except 0) Hz in 16-bit operation
Following range in 32-bit operation
3. Applicable devices
S
1 : Specify a transistor output Y000, Y001, or Y002 in the main unit or Y000, Y001, Y002
*2
, or Y003
*2
in a
special high speed output adapter
*1
.
*1.
Special high speed output adapters cannot be connected to the FX
3UC
-32MT-LT.
*2.
For specifying Y002 or Y003 in a special high speed output adapter, the second special high
speed output adapter is required.
Points
• When using a relay output type FX
3U
PLC, a special high speed output adapter is required.
• Outputs of special high speed output adapters work as differential line drivers.
S
2 : When not using a special high speed output adapter in an FX
3U
PLC or when using an FX
3UC
PLC,
specify a transistor output number.
When using a special high speed output adapter in an FX
3U
PLC, specify the following output numbers.
S
3 : "D
.b" cannot be indexed with index registers (V and Z).
Operand type
Description
Data type
Device number specifying output pulse frequency
*1
16- or 32-bit binary
Device number outputting pulse
Bit
Device number to which rotation direction signal is output
Pulse output destination
Setting range
FX
3U
PLC
Special high speed output adapter
−
200,000 to
−
1, +1 to 200,000 (Hz)
FX
3UC
PLC
Main unit
−
100,000 to
−
1, +1 to 100,000 (Hz)
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
3
3
3
3
3 3 3 3
3
3 3
3
3 3
S
1
3
S
2
3
3
S
3
3
Special high speed output adapter No.
Pulse output
Rotation direction output
No. 1 (1st unit)
=For Y000
Y004
=For Y001
Y005
No. 2 (2nd unit)
=For Y002
Y006
=For Y003
Y007
FNC 157
PLSV
D
PLSV
16-bit Instruction
9 steps
Mnemonic
Operation Condition
Continuous
Operation
DPLSV
32-bit Instruction
17 steps
Mnemonic
Operation Condition
Continuous
Operation
S
1
D
1
D
2
S
1
D
1
D
2
D
1
D
1
D
1
D
1