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Trial Operation and Debugging Section 7-2
The following areas can be force-set and reset.
CIO (I/O bits, data link bits, CPU Bus Unit bits, Special I/O Unit bits, Inner
Board bits, SYSMAC BUS bits, Optical I/O Unit bits, work bits), WR Area,
Timer Completion Flags, HR Area, Counter Completion Flags. (The Inner
Board, SYSMAC BUS, and I/O Terminal Areas are supported by the CS-
series CPU Units only.)
Programming Device Operation
• Select bits for forced setting/resetting.
• Select forced set or forced reset.
• Clear forced status (including clearing all forced status at the same time).
7-2-2 Differential Monitoring
When the CPU Unit detects that a bit set by a Programming Device has
changed from OFF to ON or from ON to OFF, the results are indicated in the a
Differentiate Monitor Completed Flag (A50809). The Flag will turn ON when
conditions set for the differential monitor have been met. A Programming
Device can monitor and display these results on screen.
Programming Device Operation for CX-Programmer
1,2,3... 1. Right-click the bit for differential monitoring.
2. Click Differential Monitor from the PLC Menu. The Differential Monitor Di-
alog Box will be displayed.
3. Click Rising or Falling.
4. Click the Start button. The buzzer will sound when the specified change is
detected and the count will be incremented.
5. Click the Stop button. Differential monitoring will stop.
Forced ON regardless
of programming
Input ignored
Output Unit CPU Unit
Forced
set
Forced
set
Program
CPU Unit
I/O memory
Bit A
Moni-
tored
for OFF
to ON
transi-
tion.
Programming Device
Detects bit A
OFF to ON
transition.
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