Mitsubishi Electric Q173HCPU User Manual page 27

2 SYSTEM CONFIGURATION
(11) The maximum distance between the Motion CPU and servo amplifier, servo
amplifier and servo amplifier of the SSCNET cable on the same bus was set to
50(164.04)[m(ft.)], and the flexibility improved at the Motion system design.
(12) Motion CPU becomes difficult to be influenced of an electromagnetic noise from
servo amplifier, etc. by using the SSCNET cable (optical communication).
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