69
Chapter 6 - IDeal
™
Command Reference
Program 17:
[SCREEN 3]
MS21,”Part G Part H Part J”
Writes a message above function keys.
FK1,2,3,17,18
Wait for selected key press
IF(FKEY)=17 GT[SCREEN 2] EB
If Up arrow goto screen 2
IF(FKEY)=18 GT[SCREEN 1] EB
If Down arrow goto screen 1
(FKEY)=(FKEY)+6
Add offset to FKEY variable to goto
correct part subroutine
GT(FKEY)
Jumps to part G, H,J in program
#7,8 or 9
EN
End of Routine
The programs to make Parts A,B,C, D, etc.are in program numbers 1-9. To continu-
ously cycle through put a GT[SCREEN 1] at the end of each part program.
GH
Go Home
syntax - GH±r,±r
Units:
velocity units selected from the EDIT > SETUP > MECH menu
Range:
unit scaling dependent
Direction:
positive (+) direction established in EDIT > SETUP > MOTOR menu
Default:
n/a
The GH command initiates a homing routine (seeks the home switch) to establish
a home reference position.When it reaches home,the position counter is set to
zero or to the Home Offset value selected in the EDIT > SETUP > HOME menu.
The motor will move at the GH velocity (n) and direction (±) specified until it
either finds a home limit switch or determines that it cannot find one between the
two end-of-travel limit switches.The Go Home move uses the last acceleration and
deceleration specified.
The exact homing routine used,and the ultimate end position of your system’s
home reference,depends upon the values of your EDIT > SETUP > HOME parame-
ters (edge,level, final approach direction,and offset,) and whether or not you have
specified open or closed loop moves in the EDIT > SETUP > ENCODER menu.
The control will reverse direction when the first End of Travel limit switch is
encountered while searching for a Home switch.If the second End of Travel switch
is encountered,the unit will abort the Go Home move and generate a fault.
Assuming the presence of an operational home switch,the control will ultimately
seek a home position according to the home setup parameters you specified (edge,
level, final approach direction,and offset).
Closed loop systems will normally home with more accuracy than open loop sys-
tems because encoders come with a Z marker pulse (1/8000 of a revolution on our
B Series.) In a typical Go Home routine,the control will first sense the edge of the
switch defined in the Go Home SETUP menu.It will then decelerate the motor to a
stop at the last defined deceleration rate.The final homing motion will now be
determined by the Go Home options selected in the SETUP menu.
The final homing direction dictates the direction from which the final approach to
the switch is made.The edge selected will determine from which side of the home
switch this final approach will be based.In a “closed loop”mode Go Home routine,
the control will additionally slow to a creep,accelerate and stop when it sees the
encoder’s “Z”Marker Pulse after seeing the reference edge of the switch.If a mark-
Содержание B8961
Страница 111: ...109 Chapter 7 Programming with Serial Communication...
Страница 132: ...B8961 and B8962 User Manual 130...
Страница 136: ...B8961 and B8962 User Manual 134 B8961 and B8962 Hardware Connections...
Страница 137: ...135 Chapter 8 Hardware Reference B8961 and B8962 Input and Output Schematics...
Страница 138: ...B8961 and B8962 User Manual 136 Connecting IDC Limit Switches to the B8961 2...
Страница 156: ...B8961 and B8962 User Manual 154...