Omron CS1W-MC221 - 02-2008 Operation Manual page 90

Overview of Version 1 Upgrades
Application Precautions
Note
Note
N010 G71 N009/A1010<30 ....... Waits until present position of X axis reaches
N011 G63 A1004=11................. Changes gear ratio denominator to 11.
Etc.
(1) When the electronic gear function is executed in Stop Mode, there is no
operation completion, so the axis command for the next block is not exe-
cuted 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 gear function begins operating. When in Pass Mode or In-position
Check Off Mode, hold the values until operation moves to the next block
after the electronic gear function.
• The electronic gear function and the electronic cam function cannot be
simultaneously executed for the same operating axis. One of them must
be ended using the electronic cam/gear cancel function (CANCEL).
• 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.
• There may be cases where operations by input axes and integrated axes
do not function normally. For details, refer to Appendix B.
• Input axis speed (high and low) must be checked to ensure that operating
axis speed does not exceed the maximum feed rate.
• When an MPG or axis feedback (encoder) is used for the input axis, input
axis oscillation may affect the operating axis. If backlash compensation is
set for the operating axis, oscillation will occur in the backlash compensa-
tion range. The larger the backlash, the greater the oscillation becomes.
It is recommended that a higher resolution encoder be used for the input axis
than for the operating axis.
• The gear ratio (numerator and denominator) must be set in pulses. Even if
the unit is set to millimeters, degrees, or inches in the parameters, the val-
ues must be converted to pulse units for the gear ratio numerator (output)
and gear ratio denominator (input) in the electronic gear function's oper-
and table.
• If the master axis and slave axis are switched and then the slave axis is
operated by the electronic gear function with respect to the master axis
encoder, the servomotor's present position will always have an error of
several pulses, and the calculation of the travel distance will gradually
deviate. This will require separate programming for position compensa-
tion.
• When the electronic gear function is executed, the override function for
the operating axis is disabled.
30 or higher.
Section 1-12
63