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MELSEC-Q
11 INSTRUCTIONS AND FUNCTIONS
TRON
Instruction
TRace ON
• Starts a trace (tracking) in a program.
Syntax
TRON
Examples
TRON
• • • •
Executes the trace (tracking).
Description
• The TRON instruction is used to debug programs together with the TROFF instruction.
• When the TRON instruction is executed, the line numbers of the executed instructions are
displayed enclosed in square brackets ([ ]) while the program is executed.
The display can be shown only on the console screen (the display target specification by
the ZODV instruction is ignored).
• The TRON instruction can be executed in both direct and program modes.
When the following instructions are executed, the trace (tracking) started by the TRON
instruction ends.
TROFF
NEW
RUN "file name"
LOAD
CHAIN
MERGE
• Press the Ctrl + S keys to stop the screen display. Press any key to resume the
display.
REMARK
See the TROFF instruction and Chapter 10.