HUST CNC H6D-B3 - Page 44

HUST CNC H6D-B3 MANUAL
38
Length of Home Limit Switch (mm)
FDCOM * ACC
60000

FDCOM = Speed 1, in mm/min. (MCM #136~ #139)
ACC = Time for acceleration/deceleration, in ms. (MCM #167)
60000 = 60 seconds = 60 * 1000 milliseconds
When the C-bit C063=1 in PLC program, it commands the controller to do
homing operation. Do homing operation for X-axis if R232=1, do Y-axis if
R232=2, do Z –axis if R232=4 , do A–axis if R232=8 and do four axes
simultaneously if R232=15.
Ex: FDCOM = 3000.00 mm/min, and ACC = 100 ms
Length of Home Limit Switch = 3000 * 100 / 60000 = 5 mm
Fig 49 A Homing Speed and Direction of finding
（
GRID
）
Fig 50 B Homing Speed and Direction of finding（GRID）
Speed：MCM #136~ #139
Direction：MCM#130~ #133
3
rd
2
nd
Tool Position
Speed
Touch the LIMIT SWITCH
C064=1、C065=1、C066=1
Leave the LIMIT SWITCH
C064=0、C065=0、C066=0
Speed：MCM#136~ #139 × 1/4
Direction：MCM#231~ #234= 256
INDEX of finding Encoder
Speed：MCM#142~ #145
Direction：MCM#231~ #234= 256
1st Section S
p
ee
d
Speed
3
r
d
2
nd
Tool Position
1st Section S
p
ee
d
Speed：MCM #136~ #139
Direction：MCM#130~ #133
Touch the LIMIT SWITCH
C064=1、C065=1、C066=1
Leave the LIMIT SWITCH
C064=0、C065=0、C066=0
Speed：MCM#136~ #139 × 1/4
Direction：MCM#231~ #234= 0
INDEX of finding Encoder
Speed：MCM#142~ #145
Direction：MCM#231~ #234= 0