Mitsubishi Electronics fx3u

/FX

3UC

PLC User's Manual - Positioning Control Edition

Built-in Positioning Functions

10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction

10.1 Instruction Format

B - 134

10. Variable Speed Operation

(Variable Speed Pulse Output)-PLSV Instruction

The built-in positioning function uses the variable speed pulse output (PLSV) instruction equipped with the

rotation direction designation function to perform variable speed operation. If an FX3U/FX3UC PLC Ver.2.20 or

later or FX3G PLC is used, this instruction can change the speed using the acceleration/deceleration speed.

10.1 Instruction Format

1. Instruction Format

2. Data setting

*1. Setting range : -32,768 Hz to -1 Hz and +1 Hz to 32,767 Hz for 16-bit operation. For the

32-bit operation, however, the setting range should be as shown in the following table.

3. Devices

1 : 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 FX3G PLC.

*2. High-speed input/output special adapters can be connected only to the FX3U PLC.

*3. To use Y002 and Y003 with a high-speed output special adapter, connect a second high-speed output

special adapter.

Operand type Description Data type

Specifies the output pulse frequency designation device number.*1 BIN 16/32-bit

Specifies the pulse output device number. Bit

Specifies the rotation direction signal output destination device number.

Pulse output destination Setting range

FX3U PLC High-speed output special adapter -200,000 to -1 to +1 to 200,000(Hz)

FX3G/FX3U/FX3UC

PLC Main unit (transistor output) -100,000 to -1 to +1 to 100,000(Hz)

Operand

type

Bit device Word device Others

System user Digit designation System

user

Special

unit Index Con-

stant

Real

num-

ber

Char-

acter

string

Pointer

XYMTCSD

.b KnX KnY KnM KnS T C D R U\GV Z Modify K H E ""P

33333333

433 3 3 3



233

33

32-bit

instruction

17 steps DPLSV Continuous

execution

type

Instruction

symbol Execution condition

FNC 157

PLSV

PULSE V

16-bit

instruction

9 steps PLSV Continuous

execution

type

Instruction

symbol Execution condition