Omron CX-Programmer 9, Operation Manual

Page: 124 / 542

PART 1: CX-Programmer
CHAPTER 3 – Project Reference OMRON
CX-Programmer _Page 44
1) When uploading programs from a C-series PLC or other CPU Unit that cannot record rung comments.
2) When uploading programs from a CS/CJ/CP-series, CVM1/CV-series, or C200HX/HG/HE-ZE CPU Unit.
When the uploaded programs are changed in the actual CPU Unit using functions such as online editing, the
position of the rung comment can be edited.
Downloading/Uploading
CX-Programmer can also use a PLC instruction to store the section markers in the PLC when the program is
downloaded. This will allow CX-Programmer to upload a single section for online-editing. It will also allow
CX-Programmer to upload the program complete with section breaks.
A single program section may be uploaded for online-editing (reducing the transfer time to a minimum).
However, it may not be downloaded since it is only a program segment. To download a program section, it is
necessary to copy it into a complete program.
Cross-Reference Report
The Cross-Reference Report allows the symbol usage within different memory areas to be examined. It can be
used for checking the values being set by instructions when the program is not behaving as expected. It can also
allow the programmer to make efficient use of memory resources.
Use the following procedure to generate a cross-reference report.
1, 2, 3…
1. Select the Cross-Reference Report button from the toolbar to open the Cross-Reference
Report.
2. Select a usage from the Report type field; either Detailed Usage , Usage Overview , Usage
Overview with comments , Usage Overview Including Unused, Usage with Comments
Including Unused , or Duplicate Usage Over Programs .
3. Select an area from the Memory Area field. When changing options, reselect from the
Memory Area field to refresh the report.
4. Select the Generate pushbutton to activate the report. In addition to the address report
information, the amount of free program memory in the PLC is displayed in the Free UM
field. The total program memory size of the PLC is displayed in the Total UM field.
The Detailed Usage option within the Report type field displays information about the usage of any address
used within the PLC program(s). The program name, step number, instruction type, the start address of the
operand and symbol details relating to each usage are shown.
The Usage Overview option within the Report type field displays an overall summary of the usage for the
selected memory area, showing only the addresses that are in use. For each used address, a usage count is
displayed. The ‘D’ symbol denotes that the address has a symbol assigned to it.
The Usage Overview Including Unused option within the Report type field displays the usage overview of the
memory area, including addresses that are not used.
The cross reference function usage list can be displayed with I/O comments and the list can also be printed (CX-
Programmer Ver. 4.0 or later). Therefore, the user can check what the addresses mean when checking the
number of times the addresses have been used. This reduces the labor required for programming/debugging.
This function can also be used to jump to the position of the rungs being used.