Omron CS1W-MC221 - 02-2008 Operation Manual page 102

Overview of Version 1 Upgrades
Application
Precautions
Note
Output Waveforms
Cam axis Y relative travel distance
Inputs
720 mm
540 mm
360 mm
180 mm
0 mm
Stroke axis X
Outputs
speed
0
(1) When "repeat" is specified as the start/end condition for the electronic
cam function in Stop Mode, the axis operation command for the next
block is not executed and the program does not end.
(2) Be careful of the execution timing when using G code commands for syn-
chronized control functions in more than one task. There is only one E
register, E31, that is used in the G code commands for synchronized con-
trol functions. When specifying the first position data address, be sure
that another address is not being specified in E31 in another task. Inter-
locking between tasks will be necessary.
Also, when in Stop Mode, operand table values indirectly referenced by
register E31 for the G01 operating axis (E31) must be held until the elec-
tronic cam function begins operating. When in Pass Mode or In-position
Check Off Mode, hold the values until the electronic cam operation starts.
• The electronic gear function and the electronic cam function cannot be
simultaneously executed for the same operating axis. One of them must
be ended by means of the electronic cam/gear cancel function (CAN-
CEL).
• When using customized functions other than synchronized control func-
tions (i.e., the memory link, linked traverse, or high-speed general-pur-
pose output functions), make sure that the position data for the respective
functions in the operand table do not overlap. For information on position
data for customized functions, refer to Appendix A.
• Input axis speed (high and low) must be checked to ensure that operating
axis speed does not exceed the maximum feed rate. If the operating axis
speed exceeds the maximum feed rate, take measures such as increas-
ing the cam angle resolution or lengthening the cam rotation distance.
• There may be cases where operations by input axes and integrated axes
do not function normally. For details, refer to Appendix B.
Operation
(1) The leading edge of general-purpose
input 2 is awaited.
(2) With the leading edge of general-
purpose input 2, the input axis (Y
axis) travel amount for 2 ms is taken
as the input, and the cam angle is
found. The initial cam position is 180
(90˚) as specified in A1005.
(3) The operating axis (X axis) position is
found from the cam curve according
to the cam angle.
Time
(4) The difference from the previous
operating axis (X axis) is output.
(5) "Repeat" is specified, so the operation
is repeated limitlessly.
Time
Section 1-12
75