Mitsubishi Electric Melsec-Q172DCPU User Manual page 44

2 SYSTEM CONFIGURATION
Operation
cycle
0.22ms
QDS
0.44ms
0.88ms or
more
(g) The following are restrictions for the communication type depending on the
operation cycle.
SSCNET /H
• MR-J4W3- B (software version A2 or
earlier) cannot be used.
• One SSCNET /H head module per line can
be set.
• AlphaStep/5-phase cannot be used.
• Up to 2 axes per IAI electric actuator
(Note-4)
controller can be set.
• Two SSCNET /H head modules per line can
be set.
• Up to 4 axes per IAI electric actuator
(Note-4)
controller can be set.
—
(Note-1): MR-J4W3- B (Software version A3 or later) supports operation cycle 0.22ms.
However, when using operation cycle 0.22ms, some functions are restricted.
Refer to the servo amplifier instruction manual for details.
(Note-2): When AlphaStep/5-phase is set in system settings, operation is carried out with
operation cycle at 0.44ms.
(Note-3): When FR-A700 series, VC series, or VPH series is set in system settings,
operation is carried out with operation cycle at 0.44ms.
(Note-4): When the setting exceeds the number of control axes per controller, a major
error (error code: 1350) occurs. Set the operation cycle as follows according to
the number of control axes per controller.
Number of control axes per controller
1 to 2 axes
3 to 4 axes
5 axes or more
(h) If there is an axis which is not set at least 1 axis by system setting in
applicable servo amplifier at MR-J4W- B use, all axes connected to
applicable servo amplifier and subsequent servo amplifiers cannot be
connected. Set "Not used" to the applicable axis with a dip switch for the
axis which is not used by MR-J4W- B.
Communication type
QDS
• The maximum number of control axes per line
is four axes.
• Set the axis select rotary switch of the servo
(Note-1)
amplifier to "0 to 3". If the axis select rotary
switch of servo amplifier is set to "4 to F", the
servo amplifiers are not recognized.
(Note-2)
• MR-J4W3- B (software version A2 or
earlier) cannot be used.
• MR-J3W- B cannot be used.
• FR-A700 series, VC series, and VPH series
cannot be used.
• The maximum number of control axes per line
is eight axes.
• Set the axis select rotary switch of the servo
amplifier to "0 to 7". If the axis select rotary
switch of servo amplifier is set to "8 to F", the
servo amplifiers are not recognized.
2 - 11
SSCNET
(Note-1)
(Note-3)
—
—: No restriction
Operation cycle
0.22ms or more
0.44ms or more
0.88ms or more
QDS