Mitsubishi 00JCPU User Manual page 256

(b) Operation of the special relay
1) When the sampling trace is executed normally
The execution status of the sampling trace can be checked in the special relay listed in Table6.20.
Number
SM800 Trace preparation
SM801 Trace start
Trace execution in
SM802
progress
SM803 Trace trigger
SM804 After trace trigger
SM805 Trace completed
SM826 Trace error
Figure 6.57 shows the operation flow chart of the special relay for sampling trace execution.
SM80
(trace ready)
SM801
(trace start)
SM802
(Trace execution in progress)
SM803
(Trace trigger)
SM804
(After trace trigger)
SM805
(Trace completed)
Figure 6.57 Operation flow chart of the special relay (for sampling trace execution)
6 - 76
Table6.20 Execution status of the sampling trace
Name
Turns on when the trace setting in GX Developer is written to the CPU module.
The relay is used to check the sampling trace enable status.
Turns on when the sampling trace is started.
Turns on during sampling trace execution.
The relay is used to check the sampling trace execution status.
A trigger turns on upon the status change of the relay (off
Turns on when any of the following condition is established.
• A trigger is issued by GX Developer.
• The TRACE instruction is executed.
• SM803 turns on.
• Detailed setting (Device and Step No.)
The relay is used to check the trigger condition establishment status.
Turns on when the sampling trace is completed.
Turns on when an error occurs during sampling trace execution.
Trace start requested
Total number of traces
Description
Trigger condition
Trace completed
established
Number of traces after trigger
on).