Mitsubishi Electric Q172DSCPU, Programming Manual

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5 INPUT AXIS MODULE
(3) [Md.322] Synchronous encoder axis speed (20n,
20n)
The speed for a synchronous encoder axis is stored in synchronous encoder axis
speed units (Refer to Section 5.3.1).
If the speed for a synchronous encoder axis exceeds the monitor range (Refer to
Section 5.3.1), minor error (error code: 882) will occur. In this case, use a smaller
number of decimal places for the speed in [Pr.321] Synchronous encoder axis
unit setting or set the speed time units to "sec".
(4) [Md.323] Synchronous encoder axis phase compensation amount
(20n, 20n)
The phase compensation amount for a synchronous encoder axis is stored in the
synchronous encoder axis position units (Refer to Section 5.3.1).
The phase compensation amount for a synchronous encoder axis is the value
after smoothing processing and phase compensation processing.
(5) [Md.324] Synchronous encoder axis rotation direction restriction
amount (20n, 20n)
While the rotation direction is restricted for a synchronous encoder axis, the
accumulation for input travel in the opposite direction of the enabled direction is
stored in synchronous encoder axis position units (Refer to Section 5.3.1) as
follows.
Setting value of [Pr.328]
Synchronous encoder axis rotation
direction restriction"
Storage details
1: Enable only for current value
increase direction
A negative accumulation is stored during rotation direction restriction.
0 is stored if there is no restriction.
2: Enable only for current value
decrease direction
A positive accumulation is stored during rotation direction restriction.
0 is stored if there is no restriction.
Rotation direction restriction is processed after phase compensation processing.
Therefore, if undershoot occurs from phase compensation during deceleration
stop, the rotation direction restriction amount might remain.
(6) [Md.327] Synchronous encoder axis minor error code
(20n)
(a) This register stores the corresponding error code (Refer to APPENDIX 1.2.)
at the minor error occurrence of synchronous encoder axis. If another minor
error occurs after error code storing, the previous error code is overwritten
by the new error code.
(b) Minor error codes can be cleared by an [Rq.323] Synchronous encoder axis
error reset (4n).