7 Before Starting Positioning Operation
119
FX
3U
-20SSC-H Positioning Block User's Manual
1
Int
roduct
ion
2
Sy
stem
conf
igur
ati
on
3
Exam
ple
C
onnect
ion
4
Ins
tall
a
tion
5
Wi
rin
g
6
Me
m
o
ry
confi
gur
at
ion
and da
ta
7
Befor
e
star
ting
positi
oning
contr
o
l
8
M
anual c
ont
ro
l
9
Posit
ioni
ng
C
ont
rol
10
Table O
per
at
ion
7.9 Other functions
7.9.11
Positioning completion signal output waiting time (Ver.1.20 or later)
In positioning operation shorter than one scan time of the PLC, the system cannot detect "OFF" of the
positioning completion signal. As a result, the system cannot detect the status transition "from OFF to ON" of
the positioning completion signal, and cannot set to ON the next START command.
If the positioning completion signal output waiting time is set to one scan time or longer, the system can
detect the positioning completion signal in a sequence program, and can set to ON the next positioning
START command.
For positioning operation sufficiently longer than one scan time of the PLC, it is not necessary to set the
positioning completion signal output waiting time.
→
For the parameters, control data and monitor data, refer to Chapter 11
1. Positioning completion signal output waiting time setting
Set the time until the positioning completion flag turns ON after positioning is completed.
*1.
The positioning completion signal turns ON in the following operations.
However, the positioning completion signal remains OFF even in an operation in which the positioning
completion signal usually turns ON if the position stopped by the STOP command is equivalent to the
target address position.
BFM Number
Description
X-axis
Y-axis
Positioning completion signal output
waiting time
BFM #14106
BFM #14306
Setting range: 0 to 5000 ms
Positioning
completion
Status
information
BFM #28 b6
BFM #128 b6
These bits are set (to ON) when positioning operation is normally
completed, and reset (to OFF) when the START command is set
to ON, when an error occurs, or when the error reset command is
set to ON.
*1
These bits remain OFF after positioning is stopped by the STOP
command.
• Operations in which the positioning completion signal
turns ON
• Operations in which the positioning
completion signal does not turn ON
- Mechanical zero
return operation
(DOG, stopper type)
- 1-speed positioning
operation
- Interrupt 1-speed
constant quantity feed
- 2-speed positioning
operation
- Interrupt 2-speed
constant quantity feed
- Interrupt stop
- Multi-speed operation
- Linear interpolation
- Linear interpolation
(interrupt stop)
- Circular interpolation
- Reciprocal
movement instruction
(Ver.1.10 or later)
- Mechanical zero return
operation (data set type)
- JOG operation
- Manual pulse generator
operation
- Variable speed operation