Mitsubishi Electric M800VW Series Programming Manual page 562

M800V/M80V Series PLC Programming Manual (2/2)
13 Spindle Control
13.12 Guide Bushing Spindle Synchronization
Explanation of operation
[Signal timing chart of G/B spindle synchronization phase memory/phase alignment]
Signal from PLC to CNC
(a) G/B spindle
synchronization
valid (GBON)
(b) G/B spindle
synchronization:
phase memory (GBPHM)
(c) G/B spindle
synchronization:
phase alignment (GBPHS)
(d) Forward run start (SRN) or
reverse run start (SRI) of
reference spindle
(S command of 300r/min
or below)
Signal from CNC to PLC
(e) Z phase passed
(SZPH) of reference
spindle/G/B spindle
(f) Zero speed (ZSO) of
reference spindle/G/B
spindle
(g) Spindle up-to-speed
(USO) of reference
spindle/G/B spindle
(h) G/B spindle synchronization:
phase alignment complete
(GBPHF)
Insertion of square bar
<Square bar is inserted the first
time (phase memory)>
Rotate by one revolution or more
541
<Square bar is inserted the second time
and following (phase alignment)>
Constant
speed rotation
IB-1501668-B