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10 CPU Unit Functions
CJ2 CPU Unit Software User’s Manual
10-7 Debugging
10
10-7-6 Tracing Data
z Data to Sample and Timing
Data Size
The maximum size of I/O memory data that can be specified for sampling is 31 bits and 16 words.
Data Types
The following data types can be specified for sampling.
•BOOL (bit)
• UINT (one-word unsigned binary)
• UDINT (two-word unsigned binary)
• ULINT (four-word unsigned binary)
• INT (one-word signed binary)
• DINT (two-word signed binary)
• LINT (four-word signed binary)
• UINT BCD (one-word unsigned binary)
• UDINT BCD (two-word unsigned binary)
• ULINT BCD (four-word unsigned binary)
• REAL (two-word floating point)
• LREAL (four-word floating point)
• CHANNEL (word)
• WORD (one-word hexadecimal)
• DWORD (two-word hexadecimal)
• LWORD (four-word hexadecimal)
Timing
I/O memory data can be sampled at the following times.
• Specified sampling time (1 to 2,550 ms in 1-ms units)
• Once per cycle
• At the execution of a trace memory instruction (TRSM(045) instruction)
• Once per synchronous operation cycle (0.5 to 10.0 ms in 0.1-ms increments)*
* Continuous tracing cannot be used if the synchronous operation cycle is less than 3.0 ms.
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