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120
Transferring and Saving Data
Section 5-1
Note
For when more than one CX-Position is used for one PCU.
Explanation
The above table shows the operation that results when a data transfer func-
tion is executed (the “executed” row in the table) on the data for one axis from
the CPU Unit or CX-Position while a data transfer function is being executed
(the “status” column in the table) on the data for another axis from the CPU
Unit or CX-Position. (If data transfer functions are executed from the CPU Unit
at the same time, depending on the processing in the PCU, it may be neces-
sary to transpose rows and columns in the above table to identify the kind of
operation that will be performed.)
“---” in the table indicates a combination of functions that does not exist. (The
IORD instruction reads all data in one operation. The status “during IORD
instruction” does not exist.)
“OK” in the above table indicates that the functions will be executed. The sec-
ond function will be executed after execution of the first function has been
completed. However, if reading and writing (in whichever order) are performed
for the same data, depending on the timing of the PCU’s internal processing,
the values that are read may either be the values before writing or after writ-
ing. (See the diagram below.)
IORD/IOWR
instruction
Data transfer bit
CX-Position
IORD
IOWR
READ
DATA
WRITE
DATA
SAVE
DATA
Upload
Download
Save
IORD/IOWR
instruction
During
IORD exe-
cution
---
---
---
---
---
---
---
---
During
IOWR exe-
cution
OK
Busy
OK
OK
OK
OK
Busy
Busy
Data transfer
bit
During
read
OK
OK
Error
Error
Error
OK
Busy
Busy
During
write
OK
Busy
Error
Error
Error
OK
Busy
Busy
During
save
Busy
Busy
Error
Error
Error
OK
Busy
Busy
CX-Position
During
upload
OK
OK
OK
OK
OK
OK
OK
OK
During
download
OK
Busy
Error
Error
Error
OK
Busy
(see note)
Busy
(see note)
During
save
Busy
Busy
Error
Error
Error
OK
Busy
(see note)
Busy
(see note)
Executed
Status
Содержание CJ1W-C113 - REV 02-2008
Страница 1: ...Position Control Units Cat No W397 E1 07 SYSMAC CJ1W NC113 213 413 133 233 433 OPERATION MANUAL ...
Страница 2: ...CJ1W NC113 213 413 133 233 433 Position Control Units Operation Manual Revised February 2008 ...
Страница 3: ...iv ...
Страница 13: ...xiv ...
Страница 15: ...xvi ...
Страница 19: ...xx ...
Страница 27: ...xxviii Conformance to EC Directives 6 ...
Страница 43: ...16 Control System Principles Section 1 7 ...
Страница 47: ...20 Basic Procedures Section 2 ...
Страница 139: ...112 Examples of Parameter Settings Section 4 9 ...
Страница 173: ...146 Transferring Data with CX Position Section 5 7 ...
Страница 223: ...196 Sample Program Section 7 7 ...
Страница 259: ...232 Sample Program Section 8 10 ...
Страница 293: ...266 Easy Backup Function Ver 2 0 or later Section 9 11 ...
Страница 369: ...342 Reading Error Information with CX Position Section 11 8 ...
Страница 385: ...358 Common Parameter Area Appendix C ...
Страница 399: ...372 Parameter Coding Sheets Appendix E ...