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Electronic Gear Function
Section 6-18
Transfer Data (DM)
6-18 Electronic Gear Function
Overview
Mode:
Manual;
Method:
System parameter setting (IOWR or CX-Motion)
The electronic gear function is provided for operations such as using a Man-
ual Pulse Generator (MPG) for handle feeding or using an absolute encoder
for synchronizing axis feeding with a conveyer. Both the numerator and
denominator can be specified, so this electronic gear function enables more
precise feed control than was possible with previous MC Unit models.
6-18-1 Setting the System Parameters
Setting MPG or Sync Encoder
Using CX-Motion, make the setting in the Unit parameters to determine
whether an MPG or a sync encoder is to be used for pulse inputs.
The IORD instruction can also be used to read the parameter settings For
addresses, refer to
3-3-4 Data Configuration for System Parameters
.
This setting specifies the ratio for pulse input devices connected to the MPG
or sync encoder. For the MPG, it is used to maintain a ratio of one. When it is
set for a sync encoder, the ratio can be specified as 1, 2, or 4.
Setting the Electronic Gear Ratio
When an MPG is used, the electronic gear ratio is the same as it was for pre-
vious MC Unit models.
The gear ratio for the MC221 and MC421 is set by CX-Motion or by an IOWR
instruction. There are two ways to change the electronic gear ratio:
• Change the electronic gear combination using the PLC Interface Area. (A
maximum of four can be changed in this way.)
Present position preset value: 10000
MPG input
Sync encoder
input
Encoder input
circuitry
(with ratio set)
MC Unit
X-axis speed
reference
Z-axis speed
reference
U-axis speed
reference
Position control
Position control
Position control
Position control
Servo Driver
Servo Driver
Servo Driver
Servo Driver
The electronic gear function can be enabled or disabled individually for
each axis (with the MPG Enable Bit). It is possible to enable and disa-
ble it for only the required axes with any given timing.
Electronic gear: Applies a fixed ratio to input pulses.
Y-axis speed
reference
Summary of Contents for CS1W-MC221 -
Page 1: ...Motion Control Units Cat No W359 E1 04 CS1W MC221 V1 421 V1 OPERATION MANUAL ...
Page 2: ...CS1W MC221 V1 421 V1 Motion Control Units Operation Manual Revised February 2008 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 11: ...xii ...
Page 15: ...xvi ...
Page 19: ...xx ...
Page 27: ...xxviii Conformance to EC Directives 6 ...
Page 133: ...106 Installation Section 2 2 2 2 4 Dimensions CS1W MC421 CS1W MC221 ...
Page 173: ...146 Connecting Peripheral Devices Section 2 7 ...
Page 227: ...200 Command Area Section 3 6 ...
Page 351: ...324 Interface Specifics Section 5 4 ...
Page 513: ...486 Absolute Encoder Interface Specifications Section 9 7 ...
Page 575: ...548 Error Log Section 12 6 ...
Page 589: ...562 Performance Appendix A ...
Page 655: ...628 Control Bit Flag Timing Charts Appendix E ...
Page 683: ...656 Origin Search Patterns Appendix F ...
Page 685: ...658 Encoder Divider Rate and Rotation Speed for OMRON Servo Drivers Appendix G ...