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APPEN-
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Appendix 3 Method of Replacing Basic Model QCPU or High Performance Model QCPU with Universal
Model QCPU
Appendix 3.1 Precautions for Replacement
APPENDICES
App - 16
(6) Debugging
* 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.
TableApp.14 Precautions for replacement and replacement methods (Debugging)
Item Precautions Replacement method Reference
Monitor
*3
The monitoring condition cannot be set.
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
coincide with the setting value
• at every specified time (settable range:
1 to 5000ms)
Section 6.11.1, 6.14
Scan time
measurement by GX
Developer
*3
Time required for executing a part of the
program cannot be measured using the
scan time measurement function.
*1
Calculate the time using instruction
processing time described in the manual.
• Section 6.13.3
• Appendix 1.4 in the
QCPU Programming
Manual (Common
Instructions)
External input/output
forced on/off
*3
The external input/output forced on/off
function is not supported.
*2
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/
off are referred to or changed using the
direct input device (DX) and direct
output device (DY).
• Input and output targeted for forced on/
off are referred to or changed within an
interrupt program.
Section 6.11.3,
Appendix 3.4.6
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