Mitsubishi FX3U-20SSC-H User Manual

7 Before Starting Positioning Operation
124
FX3U-20SSC-H Positioning Block User's Manual
7.11 Cautions for Positioning Operation
7.11 Cautions for Positioning Operation
7.11.1 Overlapped specification of operation mode
1) The positioning operation does not start at START input/command if multiple operation patterns are
selected (with multiple bits turned on) in the parameters for operating patterns.
2) When two or more positioning operation commands are ON at the same time such as the forward rotation
JOG/reverse rotation JOG command and mechanical zero return command (operation command I), such
commands are executed with the following priority.
Priority of positioning operation commands:
START command > Forward rotation JOG > Reverse rotation JOG > Mechanical zero return command
If the forward rotation JOG command and reverse rotation JOG command turn ON at the same time,
however, the forward rotation JOG/reverse rotation JOG commands are ignored.
7.11.2 When the travel distance is small
1. 1-speed positioning operation
If the time needed for the travel distance (target address 1) is shorter than the acceleration/deceleration time,
the actual operation speed does not reach the command speed (operation speed 1).
*1. For the relation between the time for the actual acceleration/deceleration and the specified time for
desired acceleration/deceleration, refer to the following.
→ Refer to Section 7.2
BFM Number
Data type
X-axis Y-axis
Operation pattern selection BFM #520 BFM #620 Control data
Forward rotation JOG Operation command 1 BFM #518 b4 BFM #618 b4 Control data
Reverse rotation JOG Operation command 1 BFM #518 b5 BFM #618 b5 Control data
Mechanical zero return
command
Operation command 1 BFM #518 b6 BFM #618 b6 Control data
START command Operation command 1 BFM #518 b9 BFM #618 b9 Control data
X-START (input terminal) - - -
Y-START (input terminal) - - -
BFM Number
Data type
X-axis Y-axis
Target address 1 BFM #501, #500 BFM #601, #600 Control data
Operation speed 1 BFM #503, #502 BFM #603, #602 Control data
Acceleration/deceleration
time change command
(Ver.1.30 or later)
Operation command 2 BFM #519 b5 BFM #619 b5 Control data
Speed
Desired
acceleration
time
Desired
deceleration
time
Trapezoidal
control
Operation speed 1
Approximate S-shaped
control
Start
Time
Traveling time < desired acceleration time + desired deceleration time
*1
*1
*1
*1

Mitsubishi FX3U-20SSC-H Specifications

General

Brand	Mitsubishi
Model	FX3U-20SSC-H
Category	Controller
Language	English