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Communications Time
Section 6-3
Data Carrier Travel Speed
The Data Carrier travel speed can be calculated using the following formula.
Travel speed = Travel distance in communications area/communications time
The communications time is given in the graphs on the previous page. The
travel distance in the communications area depends on the R/W Head and
the Data Carrier. Refer to the user manual for the R/W Head and Data Carri-
ers.
Note
1.
The travel speed will change with the communications distance and axis
displacement. We recommend using the widest part of the area.
2.
The above calculation formula is provided only as a guideline. Perform
tests with the actual system before application.
3.
Communications error processing is not included in the above calculation
formula.
6-3-2
TAT Calculation
The time from when the CS/CJ-series CPU Unit turns ON the ID Sensor Unit’s
Command Execution Bit until the Data Carrier is communicated with and exe-
cution results are returned (i.e. the TAT, or Turnaround Time) can be calcu-
lated with the following formula.
TAT = Coefficient
×
Cycle time + Communications time
Note
Truncate the result of the Number of Processing Bytes/160.
R/W Head
Data Carrier
Communications
area
Travel distance in
communications area
Name
Description
Coefficient
(Number of Processing Bytes/160) + 3 (See note.)
Cycle time
Cycle time of the CS/CJ-series CPU Unit
Communications
time
The communications time between the ID Sensor Unit and
Data Carrier (as previously described)
Summary of Contents for CJ - 12-2004
Page 2: ...SYSMAC CS CJ Series ID Sensor Units Operation Manual Revised December 2004...
Page 3: ...iv...
Page 11: ...xii...
Page 55: ...36 Connections and Wiring Section 3 4...
Page 69: ...50 I O Data Allocations Section 4 3...
Page 91: ...72 Data Check Section 5 7...
Page 141: ...122 Sample Programming Appendix B...
Page 147: ...128 Revision History...