Relative Position Error Sampling - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
13 Spindle Control
13.12 Guide Bushing Spindle Synchronization

13.12.2.4 Relative Position Error Sampling

During G/B spindle synchronization mode, the following five values are calculated based on the relative position error
between the reference spindle and the G/B spindle, and they are output to the R registers when the state changes between
the acceleration/deceleration state and the steady state. (Unit is pulse, 1pulse ≈ 0.088°)
 Maximum range of the relative position error during acceleration/deceleration
 Maximum value of the relative position error during acceleration/deceleration
 Maximum range of the relative position error during the steady state
 Maximum value of the relative position error during the steady state
 Average value of the relative position error during the steady state
This sampling is constantly carried out during the G/B spindle synchronization mode. It stops when the G/B spindle
synchronization mode is canceled.
How to command
This function is constantly active during G/B spindle synchronization mode. Values are set in the following R registers when
the state changes between the acceleration/deceleration state and the steady state.
[Relative position error during G/B spindle synchronization]
Spindle rotation speed
(1) Accelerating
Relative position error
0
(2) Steady rotation (3) Decelerating
(a)
(c)
(f)
545
Time
(d)
(g)
(e)
(b)
IB-1501668-B