
293
Flow of Processing
When the interrupt occurs while processing ADD, the addition result, 1235, is
saved temporarily in memory and not stored in DM 0000. Although #0010 is
moved to DM 0000 in the interrupt program, the addition result that was saved is
written to DM 0000 as soon as processing returns to the main program, effec-
tively undoing the results of the interrupt program.
Countermeasure for Above Problem
Interrupting Writing Multiple Words of Data
Subroutines and Interrupt Control
Section 5-23
Summary of Contents for SYSMAC C200HE
Page 1: ...Cat No W303 E1 09 OPERATION MANUAL Programmable Controllers C200HX C200HG C200HE ...
Page 2: ......
Page 3: ...C200HX C200HG C200HE Programmable Controllers Operation Manual Revised August 2004 ...
Page 6: ...vi ...
Page 10: ......
Page 12: ......
Page 380: ......
Page 410: ......
Page 438: ......
Page 464: ......
Page 474: ......
Page 522: ......
Page 538: ......
Page 552: ...534 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage ...
Page 554: ......
Page 560: ......
Page 584: ......
Page 585: ......
Page 586: ...W303 E1 09 ...