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5 FUNCTIONS USED WITH SSCNET COMMUNICATION
5.8 Compatible Devices with SSCNETIII(/H)
• When using a multi-axis servo amplifier (MR-J4W-B), there is a restriction on the number of connectable units (servo
amplifier (MR-J4(W)-B), SSCNET/H head module, other drivers etc.) between the Motion CPU and the multi-axis servo
amplifier depending on the number of optical hub units being used. The number of connectable units depending on how
many optical hub units are used are shown below. When more than the number of connectable units are connected, a
warning (error code: 0C82H) occurs. While communication with MR-J4W-B is still possible when the warning occurs,
communication becomes unstable, therefore the unit configuration should be reviewed.
*1 Only the units on the same route are included in the count.
*2 A warning occurs.
Multi-axis servo
amplifier
Number of optical hub units connected
*1
0 1 2 3 4 5 6 7 8 9 or more
MR-J4-B No restriction
MR-J4W2-B 1 axis set
2 axes set141210975421
*2
MR-J4W3-B 1 axis set No restriction
2 axes set141210975421
*2
3 axes set1311986431
*2
OUT2OUT2
Sub
route (2)
Sub
route (1)
Optical
hub unit
Optical
hub unit
Main
route
IN
OUT1
IN
OUT1
Servo amplifier
MR-J4W2-B
Motion CPU module
Two optical hub units are connected on the main route
therefore the number of connected units is ten or less.
MR-J4W-B is not connected on the same
route therefore there are no restrictions
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