145
Functions Compatible with Servo Drivers with Absolute Encoders
Section 7-8
number of rotations present value. The stored value is to follow the following
conversion formula:
"ABS number of rotations present value (AR 04 to 05)" = R x M
"The number of Initial incremental pulses (AR 00 to 01)" = P
0
M: Multi-turn data (meaning how many times the axis of a rotary encoder
rotated)
R (DM 6609, DM 6610): The number of pulses for encoder's one revolution
(Absolute encoder's resolution set on servo driver x phase-difference input
multiplication of the unit (unit function setting: high-speed counter 1 input
method (DM 6605 bit 00 to 03)))
P
0
: The number of initial incremental pulses
P
s
: ABS offset value (DM 6645/6646)
At reading the ABS number of rotations, the number of rotations correspond-
ing to the number of initial incremental pulses is stored in AR 00 to 01.
7-8-6
ABS Present Value
"ABS present value" can be found by subtracting an ABS offset value (DM
6645/6646) from the absolute encoder's state (position) at the SEN signal
being turned ON.
The value is calculated using the following conversion formula and is used for
"ABS present value preset function". It is not stored in the memory as data.
■
In ABS Linear Mode
"ABS present value" = "ABS number of rotations present value (AR 04 to 05)"
+ "number of initial incremental pulses (AR 00 to 01)" - P
s
P
s
: ABS offset value (DM 6645/6646)
■
In ABS Ring Mode
"ABS present value" = P
0
-
P
s
P
0
: The number of initial incremental pulses
P
s
: ABS offset value (DM 6645/6646)
0
+1
+2
+3
M
Point of reference
(ABS offset)
ABS Number of Rotations Present Value
(AR 04 to 05) + P0 (AR 00/01)
(ABS encoder's position)
M X R
P
0
P
s
ABS Present Value
Summary of Contents for CS1W-HCA12-V1
Page 2: ......
Page 6: ...vi...
Page 20: ...xx Conformance to EC Directives 7...
Page 38: ...18 Models and System Configurations Section 1 2...
Page 78: ...58 Fail safe Circuits Section 3 5...
Page 138: ...118 AR Area Section 6 4...
Page 204: ...184 Improved Instructions Section 7 14...
Page 222: ...202 Cycle Time Section 8 3...
Page 240: ...220 Troubleshooting Flowcharts Section 9 5...
Page 244: ...224 Precautions when Using the CX Programmer Appendix A...
Page 252: ......
Page 253: ......