Omron CS1W-MC221 - 02-2008 Operation Manual page 393

Electronic Gear Function
Using CX-Motion
Using IOWR
Address
MC221 MC421
X axis Y axis Z axis
113A 1153 116C
(4410) (4435) (4460)
113B 1154 116D
(4411) (4436) (4461)
113C 1155 116E
(4412) (4437) (4462)
113D 1156 116F
(4413) (4438) (4463)
366
• Specifying the electronic gear combination in the PLC Interface Area, and
then using an IOWR instruction to change that value directly. (The number
of combinations is unlimited.)
Regardless of which of these methods is used, the change will go into effect
immediately.
Note With the electronic gear function, when there is a remainder in the total when
the input pulses are multiplied by the gear ratio, it is possible to achieve highly
accurate synchronization by adding the remaining pulses to the next input
pulses. If the electronic gear ratio is changed during a synchronized opera-
tion, however, the remainder will be taken as 0 and the calculation will begin
with the new electronic gear ratio. For that reason there will be a temporary
drop in speed from that which was in effect before the gear ratio was changed.
For details on using CX-Motion to set the electronic gear ratio, refer to the CX-
Motion Online Help.
Use the IOWR instruction to specify the following addresses for the control
code, and set the numerator and denominator in any area. (Refer to the lad-
der programming example provided below.) The addresses are shown in
hexadecimal, with their decimal number equivalents shown underneath in
parentheses.
R/W Name
U axis
1185 R/W MPG ratio
(4485) numerator (1)/
electronic gear
numerator (1)
1186 R/W MPG ratio
(4486) denominator(1)/
electronic gear
denominator(1)
1187 R/W MPG ratio
(4487) numerator (2)/
electronic gear
numerator (2)
1188 R/W MPG ratio
(4488) denominator (2)/
electronic gear
denominator (2)
Configuration
15 L+1 00 15
0 0 0 0 MPG ratio numerator (1)/
electronic gear numerator (1)
15 L+1 00 15
MPG ratio denominator(1)/
0 0 0 0
electronic gear denominator(1)
Sets the ratio for an MPG/electronic gear pulse
for setting 1.
Range of numerator:
D8F0 to 2710 hex ( 10000 to 10000)
Range of denominator:
0001 to 2710 hex (1 to 10000)
0.0001 |Numerator/denominator|
If the numerator is negative, operation will be in
the reverse direction.
If the numerator was negative with Unit Ver. 1.14
or earlier, the limit input for the direction opposite
from travel was monitored, but with Unit Ver. 1.15
or larger and with Units whose model number
ends in -V1, the limit input in the direction of travel
is monitored. Consider this point in system
design.
Sets the ratio for an MPG/electronic gear
pulse for setting 2. The data configuration and
range are the same as those for MPG ratio/
electronic gear numerator (1)/denominator
(1).
Section 6-18
Default
setting
0000
L 00
0001
(1)
L 00
0000
0001
(1)
10000
0000
000A
(10)
0000
0001
(1)