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MECHATROLINK Settings
Section 6-2
Setting the Transfer Cycle and Communications Cycle
The transfer cycle and communications cycle are set as Common Parameters
in the PCU. Set the PCU's transfer cycle and communications cycle according
to the number of connected MECHATROLINK devices so that the set values
are not lower than the values shown in the following table.
Note
Make sure that all of the axis number settings (station numbers of
the MECHATROLINK devices) are set to values equal to or less
than the number of connected devices for the transfer cycle. Here,
the number of connected MECHATROLINK devices is not the ac-
tual number of MECHATROLINK devices connected, but the high-
est registered axis number. For example, when using
MECHATROLINK devices for axis number 9 or higher, the transfer
cycle must be at least 2 ms even if less than nine devices are con-
nected. If the set value for the transfer cycle is smaller than the
number of connected devices or the axis number settings, a Trans-
fer Cycle Setting Error (Unit error code: 0027) will occur when
CONNECT is executed.
For the communications cycle, set the multiplier of the transfer cycle set value
so that the value is not lower than the values shown in the following table.
For example, if up to 3 Servo Drives (axis number 1 to 3) equipped with
JUSP-NS115 MECHATROLINK-II Application Modules are connected to the
PCU, either set the transfer cycle to 0.5 ms min. and the communications
cycle set value to 2 (multiplier) or higher, or set the transfer cycle to 1.0 ms
min. and the communications cycle set value to 1 (multiplier) or higher.
Note
(1) The set values in the above table apply when the default settings are used
for the number of communications retries (once) and C2 master connec-
tion (No C2 master).
Number of
devices
connected
R88D-GN
@
-ML2 G-series
Servo Drive equipped
with built-in
MECHATROLINK-II
communications
R88D-WT
@
W-series
Servo Drive equipped
with JUSP-NS115
MECHATROLINK-II
Application Module
R88D-WN
@
-ML2 W-
series Servo Drive
equipped with built-in
MECHATROLINK-II
communications
R7D-ZN
@
-ML2
SMARTSTEP Junior
Servo Drive equipped
with built-in
MECHATROLINK-II
communications
Minimum
transfer
cycle set
value
Minimum
communi-
cations
cycle value
Minimum
transfer
cycle set
value
Minimum
communi-
cations
cycle value
Minimum
transfer
cycle set
value
Minimum
communi-
cations
cycle value
Minimum
transfer
cycle set
value
Minimum
communi-
cations
cycle value
1
1.0 ms
1.0 ms (1)
0.5 ms
1.0 ms (2)
0.5 ms
0.5 ms (1)
1.0 ms
1.0 ms (1)
2
1.0 ms
1.0 ms (1)
0.5 ms
1.0 ms (2)
0.5 ms
1.0 ms (2)
1.0 ms
1.0 ms (1)
3
1.0 ms
1.0 ms (1)
0.5 ms
1.0 ms (2)
0.5 ms
1.0 ms (2)
1.0 ms
1.0 ms (1)
4
1.0 ms
1.0 ms (1)
1.0 ms
1.0 ms (1)
1.0 ms
1.0 ms (1)
1.0 ms
1.0 ms (1)
5
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
6
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
7
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
8
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
1.0 ms
2.0 ms (2)
9
2.0 ms
2.0 ms (1)
2.0 ms
2.0 ms (1)
2.0 ms
2.0 ms (1)
2.0 ms
2.0 ms (1)
10
2.0 ms
2.0 ms (1)
2.0 ms
2.0 ms (1)
2.0 ms
2.0 ms (1)
2.0 ms
2.0 ms (1)
11
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
12
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
13
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
14
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
15
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
16
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
2.0 ms
4.0 ms (2)
Summary of Contents for CJ1W-MA - REV 10-2008
Page 3: ...iv ...
Page 5: ...vi ...
Page 21: ...xxii ...
Page 57: ...30 Starting Operation Section 2 2 ...
Page 97: ...70 Wiring Section 3 4 ...
Page 247: ...220 Transferring Servo Parameters Section 5 3 ...
Page 281: ...254 Standard Settings for Servo Drives Using MECHATROLINK Section 6 4 ...
Page 343: ...316 Absolute Encoder Origin Section 8 6 ...
Page 375: ...348 Linear Interpolation Section 9 7 ...
Page 423: ...396 DEVIATION COUNTER RESET Section 10 10 ...
Page 631: ...604 Additional Functions for the CJ1W NCF71 MA Appendix F ...
Page 641: ...614 Index ...
Page 643: ...616 Revision History ...