Mitsubishi Electric MELSEC iQ-F FX5 - 31.11 Absolute Position Detection System; Related devices

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31 POSITIONING INSTRUCTION
31.11 Absolute Position Detection System
31.11 Absolute Position Detection System
With the use of the servo absolute position detection system, the positioning uses the current ABS value read-out (DABS)
instruction to read out the current value (absolute position (ABS) data) from the MR-J4A or MR-J3A servo amplifier.
The data is converted into pulse when being read.
DABS
This instruction reads the absolute position (ABS) data when the servo amplifier is connected. The data is converted into
pulse when being read.
Setting data
■Description, range, data type
■Available device
*1 T, ST, C cannot be used.
Processing details
This instruction reads the absolute position (ABS) data when the servo amplifier is connected. The data is converted into
pulse when being read.
Related devices
The following lists the related special devices.
Ladder ST FBD/LD
ENO:=DABS(EN,s,d1,d2);
Operand Description Range Data type Data type (label)
(s) First number of the device that inputs the output
signal for the absolute position (ABS) data from the
servo amplifier
 Bit ANYBIT_ARRAY
(Number of
elements:3)
(d1) First number of the device that outputs the absolute
position (ABS) data control signal to the servo
amplifier
 Bit ANYBIT_ARRAY
(Number of
elements:3)
(d2) Absolute position (ABS) data (32-bit value) storage
device number
 32-bit signed binary ANY32
EN Execution condition  Bit BOOL
ENO Execution result  Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L, SM, F,
B, SB, S
T, ST, C, D, W,
SD, SW, R
U\G Z LC LZ K, H E $
(s) 
*1
 
(d1) 
*1
 
(d2) 
FX3 compatible Name High
Speed I/O
Parameter
R/W Reference
SM8029 Instruction execution complete flag  R Page 417
SM8329 Instruction execution abnormal end flag  R
R: Read only, : Not supported
(s) (d1) (d2)
EN ENO
d1s
d2