Omron CJ1M-CPU series Programming Manual

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Trial Operation and Debugging Section 7-2
The following traces can be executed.
Scheduled Data Trace A scheduled data trace will sample data at fixed intervals. Specified sampling
times are 10 to 2,550 ms in 10-ms units. Do not use the TRSM instruction in
the user program and be sure to set the sampling period higher than 0.
One-cycle Data Trace A one-cycle data trace will sample I/O refresh data after the end of the tasks
in the full cycle. Do not use the TRSM instruction in the user program and be
sure to set the sampling period higher than 0.
Data Trace via TRSM A sample will be taken once when the TRACE MEMORY SAMPLING instruc-
tion (TRSM) instruction is executed. When more than one TRSM instruction is
used in the program, a sample will be taken each time the TRSM instruction is
executed after the trace trigger condition has been met.
Data Trace Procedure
Use the following procedure to execute a trace.
1,2,3... 1. Use the CX-Programmer to set trace parameters: Address of the sampled
data, sampling period, delay time, and trigger conditions.
2. Use CX-Programmer to start sampling or turn ON the Sampling Start Bit
(A50815).
3. Put the trace trigger condition into effect.
4. End tracing.
5. Use CX-Programmer to read the trace data.
a) Select Data Trace from the PLC Menu.
b) Select Select from the Execution Menu.
c) Select Execute from the Execution Menu.
d) Select Read from the Execution Menu.
Related Auxiliary Bits/Words
Sampling Start Bit
Trace Start Bit
Trace Trigger Monitor Flag
Trace Busy Flag
Trace Completed Flag
Sampling
Name Address Description
Sampling Start Bit A50815 Use a Programming Device to turn ON this bit to start sampling. This bit
must be turned ON from a Programming Device.
Do not turn this bit ON and OFF from the user program.
Note: The bit will be cleared when the Data Trace has been completed.
Trace Start Bit A50814 When this bit is turned ON, the trace trigger will be monitored and sam-
pled data will be stored in Trace Memory when the trigger condition is
met. The following traces are enabled with this bit.
1) Scheduled trace (trace at fixed intervals of 10 to 2,550 ms)
2) TRSM instruction trace (trace when the TRSM executes)
3) One-cycle trace (trace at the end of execution of all cyclic tasks)

Omron CJ1M-CPU series Specifications

General

Brand	Omron
Model	CJ1M-CPU series
Category	Controller
Language	English