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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
20 Positioning Control – FNC150 to FNC159
20.2 FNC151 – DVIT / Interrupt Positioning
20.2 FNC151 – DVIT / Interrupt Positioning
Outline
This instruction executes one-speed interrupt constant quantity feed.
→ For explanation of the instruction, refer to the Positioning Control Edition manual.
→ For cautions on using special high-speed output adapters,
refer to the Positioning Control Edition manual.
1. Instruction format
2. Set data
*1. Setting range: −32768 to +32767 (except 0) in 16-bit operation
−999,999 to +999,999 (except 0) in 32-bit operation
*2. Setting range: 10 to 32767 Hz in 16-bit operation
Following range in 32-bit operation
3. Applicable devices
S1 : Specify Y000, Y001 or Y002 transistor output from the main unit, or specify Y000, Y001, Y002
*4
or Y003
*4
from
a high-speed output special adapter
*3
.
*3. High-speed output special adapters can be connected only to FX
3U PLC.
*4. To use Y002 and Y003 with a high-speed output special adapter, connected a second high-speed output
special adapter.
Points
• When using a relay output type or triac output type FX3U PLC, a special high-speed output adapter is required.
• Outputs of special high-speed output adapters work as differential line drivers.
Operand type Description Data type
Number of output pulses (incremental address) after interrupt
*1
16- or 32-bit binary
Output pulse frequency
*2
Device number (Y) from which pulses are to be output
Bit
Device number to which rotation direction signal is output
Pulse output destination Setting range
FX3U PLC Special high-speed output adapter 10 to 200,000 (Hz)
FX3U/FX3UC PLC Main unit (transistor output) 10 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
XYMTCSD.b KnX KnY KnM KnS T C D R U\G V Z Modify K H E ""P
S
1
S
2
S3
FNC 151
DVIT
D
DVIT
16-bit Instruction
9 steps
Mnemonic Operation Condition
Continuous
Operation
DDVIT
32-bit Instruction
17 steps
Mnemonic Operation Condition
Continuous
Operation
S
1
S
2
D
1
D
2
S
1
S
2
D
1
D
2