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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
20 Positioning Control – FNC150 to FNC159
20.7 FNC158 – DRVI / Drive to Increment
20.7 FNC158 – DRVI / Drive to Increment
Outline
This instruction executes one-speed positioning by incremental drive. The movement distance from the present
position can be specified with a positive or negative sign.
→ 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) for 16-bit operation
−999,999 to +999,999 (except 0) for 32-bit operation
*2. Setting range: 10 to 32767 Hz for 16-bit operation
Following range for 32-bit operation
3. Applicable devices
S1 : Specify Y000, Y001 or Y002
*1
transistor output from the main unit, or specify Y000, Y001, Y002
*3
, or Y003
*3
from a high-speed output special adapter
*2
.
*1. Y002 is not available in 14-point and 24-point type FX
3G PLC.
*2. High-speed output special adapters can be connected only to FX
3U PLC.
*3. To use Y002 or Y003 with a high-speed output special adapter, connected a second high-speed output
special adapter.
Points
• When using a relay 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 (relative address)
*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
FX
3U PLC Special high speed output adapter 10 to 200,000 (Hz)
FX
3G/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 VZModifyKH E ""P
33333333S4 33 3 33
33333333S4 33 3 33
S
1
3
S
2
33S3 3
FNC 158
DRVI
D
DRVI
16-bit Instruction
9 steps
Mnemonic Operation Condition
Continuous
Operation
DDRVI
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