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Debugging
TableApp.14 Precautions for replacement and replacement methods (Debugging)
Item
*3
The monitoring condition cannot be set.
Monitor
Scan time
Time required for executing a part of the
measurement by GX
program cannot be measured using the
*3
Developer
scan time measurement function.
External input/output
The external input/output forced on/off
*3
forced on/off
function is not supported.
* 1: Scan time of each program can be checked on the Program monitor list screen.
* 2: Device test by GX Developer can be performed.
* 3: The serial number (first five digits) of the applicable module (Q02UCPU, Q03UDCPU, Q04UDHCPU, Q06UDHCPU, Q13UDHCPU, and
Q26UDHCPU) must be "10041" or earlier.
Precautions
Use the sampling trace function for
checking device data under the specified
monitoring condition. With this function,
changes of the specified device data can
be recorded at the following timings:
• at execution of the specified step
• on the rising/falling edge of bit devices
• when the value of word devices
• at every specified time (settable range:
Calculate the time using instruction
processing time described in the manual.
*1
The function can be replaced with the
programs described in Appendix 3.4.6.
Note, however, that replacement method
described does not apply in the following
cases:
• Input and output targeted for forced on/
*2
• Input and output targeted for forced on/
Replacement method
coincide with the setting value
1 to 5000ms)
off are referred to or changed using the
direct input device (DX) and direct
output device (DY).
off are referred to or changed within an
interrupt program.
APPENDICES
Reference
Section 6.11.1, 6.14
APPEN-
• Section 6.13.3
• Appendix 1.4 in the
QCPU Programming
Manual (Common
Instructions)
Section 6.11.3,
Appendix 3.4.6
App - 16
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DIX
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