7 Applied Instructions
7.14 Positioning Control
535
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
1
Outline
2
Instruction List
3
Configuration of
Instruction
4
How to Read
Explanation of
Instructions
5
Basic Instruction
6
Step Ladder
Instructions
7
Applied
Instructions
8
Interrupt Function
and Pulse Catch
Function
A
Relationships
between devices
and addresses
Function and operation explanation
Cautions
1) Applicable devices are limited.
S1: FX
3U, FX3UC PLCs only are applicable, index (V, Z) decoration is disabled.
S2: Please specify X000 to X007.
S3: Please specify Y000, Y001, Y002
*1
of transistor output of basic unit, or Y000, Y001, Y002
*3
, Y003
*3
of high speed output special adapter
*2
.
*1. Y002 cannot be used in the 14-point type or 24-point type of FX
3G PLC.
*2. High speed output special adapter can be connected only in FX
3U PLC.
*3. When using Y002, Y003 in high speed output special adapter, a second high speed output
special adapter is needed.
Points
• When using FX3U PLC of relay output type, high speed output special adapter is needed.
• The output of high speed output special adapter is a differential line driver.
S4: When high speed output special adapter is used at the pulse output destination in the FX
3U PLC, as
the rotating direction signal, use the output shown in the table below.
When built-in transistor output is used at the pulse output destination in the FX
3U, FX3UC, FX3G
PLCs, as the rotating direction signal, use the transistor output.
2) Output number of rotating direction signal
Operation changes as follows depending on polarity of output pulse frequency.
[+ (Positive)] → : ON
[- (Negative)] → : OFF
Cautions about writing during RUN
Avoid writing during RUN while DSZR is being executed (during pulse output).
If, during pulse output, writing during RUN is attempted in the circuit block including this instruction, it must be
noted that the pulse output slows down and stops.
Function changes by version
This instruction includes the function changes as shown in the table below depending on the version.
→ As for the explanation of the instruction and contents of function changes, refer to the positioning
control manual.
Connection position of high speed
output special adapter
Pulse output
Rotating direction
signal
First unit
=Y000 =Y004
=Y001 =Y005
Second unit
=Y002 =Y006
=Y003 =Y007
Corresponding version
Item Outline of function
FX3G FX3U FX3UC
Ver. 1.00
or later
Ver. 2.20
or later
Ver. 2.20
or later
Clear signal
output destination
designating
function
When special auxiliary relay corresponding to is turned ON, the clear
signal output specification is changed to the output number specified by special
data register corresponding to
Device for issuing pulse
Device of rotating direction signal
DSZR
EN
s1
ENO
d1
d2s2
Command
input
Device for entering the near-point signal (DOG)
Device for entering zero-point signal
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