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116
Transferring and Saving Data
Section 5-1
Example:
• If an error is detected by the data check, the correct data should be sent
again.
• If data transfer is completed successfully, the error is cleared.
• If the data is stored or the instruction to activate is executed without the
correct data being re-sent, the error will be cleared but the data after the
error will not be transmitted. In this situation, an abnormal operation may
result.
!Caution
The Intelligent I/O Write (IOWR) and Intelligent I/O Read (IORD) instructions
transfer all data indiscriminately at execution. For this reason, if the IOWR or
IORD instructions are executed consecutively within the same cycle, an error
occurring at data transfer execution may not be output to the operating mem-
ory area, in the way shown below.
DM Area
Position #0
Position #1
Position #2
Position #3
CPU Unit
Receive buffer
(internal memory)
PCU
If each item of data is
within the acceptable
range, it is written to the
position data area.
If there is one or
more item that is
outside the
acceptable range,
all data is
annulled.
Error codes output
Position #0
Position #1
Position #2
Position #3
Position data area
(internal memory)
Position #0
Position #1
Position #2
Position #3
Summary of Contents for CS1W-213 - REV 02-2008
Page 2: ...CS1W NC113 213 413 133 233 433 Position Control Units Operation Manual Revised February 2008 ...
Page 3: ...iv ...
Page 13: ...xiv ...
Page 15: ...xvi ...
Page 19: ...xx ...
Page 43: ...18 Basic Operational Flow Section 2 1 ...
Page 87: ...62 Servo Relay Unit Section 3 7 ...
Page 199: ...174 Z phase Margin Section 6 8 ...
Page 217: ...192 Sample Program Section 7 7 ...
Page 285: ...260 Easy Backup Function Ver 2 0 or later Section 9 11 ...
Page 377: ...352 Common Parameter Area Appendix C ...