Mitsubishi Electronics FX3S Manual Do Utilizador
548
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
20 Positioning Control – FNC150 to FNC159
20.1 FNC150 – DSZR / Dog Search Zero Return
20.1
FNC150 – DSZR / Dog Search Zero Return
Outline
This instruction executes a zero return, and aligns the mechanical position with a present value register inside the
PLC.
In addition, this instruction enables the following functions not supported by the ZRN (FNC156) instruction:
• DOG search function
• Zero return by the near-point (dog) signal and zero-phase signal
PLC.
In addition, this instruction enables the following functions not supported by the ZRN (FNC156) instruction:
• DOG search function
• Zero return by the near-point (dog) signal and zero-phase signal
It is not possible, however, to count the zero-phase signal and then determine the zero point.
→ 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
3. Applicable devices
S1 : "D .b" is available only in FX
3U
/FX
3UC
PLCs. However, index modifiers (V and Z) are not available.
S2 : In the case of FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLCs, specify X000 to X007.
In the case of FX
3S
PLC, specify X000 to X005.
S3 : 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 FX
3G
PLC (14-point and 24-point type) and FX
3S
/FX
3GC
PLCs.
*2.
High-speed output special adapters can be connected only to FX
3U
PLC.
*3.
To use Y002 and Y003 with a high-speed output special adapter, connected a second high-speed output
special adapter.
special adapter.
Points
• When using a relay output type or triac output type FX
• When using a relay output type or triac 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.
Operand type
Description
Data type
Device number for near-point signal (dog)
Bit
Input number for zero-phase signal
Device number (Y) from which pulses are to be output
Device number to which rotation direction signal is output
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
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
S1
S
2
S
3
S
4
S1
FNC 150
DSZR
−
Mnemonic
Operation Condition
16-bit Instruction
9 steps DSZR
Mnemonic
Operation Condition
Continuous
Operation
32-bit Instruction
S
1
S
2
D
1
D
2
S
1
S
2
D
1
D
2