Programming concepts
7.10 Debugging and testing the program
S7-1200 Programmable controller
224 System Manual, V4.2, 09/2016, A5E02486680-AK
You can sort the entries in the cross-reference. The cross-reference list provides an
overview of the use of memory addresses and tags within the user program.
● When creating and changing a program, you retain an overview of the operands, tags
and block calls you have used.
● From the cross-references, you can jump directly to the point of use of operands and
tags.
● During a program test or when troubleshooting, you are notified about which memory
location is being processed by which command in which block, which tag is being used in
which screen, and which block is called by which other block.
Table 7- 6 Elements of the cross reference
Object Name of the object that uses the lower-level objects or that is being used by the
Number Number of uses
Each location of use, for example, network
Property Special properties of referenced objects, for example, the tag names in multi-
as Shows additional information about the object, such as whether an instance DB is
used as template or as a multiple instance
Access Type of access, whether access to the operand is read access (R) and/or write
Information on the type and language used to create the object
Path of object in project tree
Depending on the installed products, the cross-reference table displays additional or different
columns.
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