Mitsubishi Electric MELSEC iQ-R Series User Manual page 44

■Restrictions
• The servo amplifier axis selected as "Synchronous encoder via servo amplifier" in"[Pr.320] Synchronous encoder axis type"
does not operate in the fully closed control mode even though "_ _1_H" is set in the servo parameter "Operation mode
selection (PA01)".
• The information about the synchronous encoder is output to "[Md.112] Optional data monitor output 4" of the servo amplifier
axis selected as "Synchronous encoder via servo amplifier" in "[Pr.320] Synchronous encoder axis type", and "[Pr.94]
Optional data monitor: Data type setting 4" is ignored. (Set the total points to be within 3 words for the optional data monitor.
Otherwise, the monitor setting is ignored.) [RD77MS]
• When the servo alarms about the serial absolute synchronous encoder connection occur in the servo amplifier axis
selected as "Synchronous encoder via servo amplifier" in "[Pr.320] Synchronous encoder axis type", the status becomes
servo OFF. "AL.25" (Absolute position erased), "AL.70" (Load-side encoder initial communication error 1), or "AL.71" (Load-
side encoder normal communication error 1) occurs in the servo amplifier.
• The error "Synchronous encoder via servo amplifier invalid error" (error code: 1BAAH) occurs in the following cases.
[RD77MS]
• MR-J4 or MR-J5 series is set in "[Pr.100] Connected device" of the axis No. selected as "Synchronous encoder via servo amplifier" in "[Pr.320] Synchronous
encoder axis type".
• The servo amplifier axis which is not set in the system setting is set to the servo amplifier axis No. to connect to "Synchronous encoder via servo amplifier".
• The servo axis, which "Invalid" is set to from the "External synchronous encoder input" list of the amplifier setting dialog using the Simple Motion Module
Setting Function, is set to the servo amplifier axis No. to connect to "Synchronous encoder via servo amplifier".
• A linear scale is connected.
[RD77GF]
• The "[Pr.100] Connected device" of the axis No. selected as "Synchronous encoder via servo amplifier" in "[Pr.320] Synchronous encoder axis type" is not
set or the servo axis, which scale measurement mode is not enabled, is set to the servo amplifier axis No. to connect to "Synchronous encoder via servo
amplifier".
• A linear scale is connected.
2 INPUT AXIS MODULE
42
2.2 Synchronous Encoder Axis